Add fantomas configuration file

This version of fantomas doesn't crash anymore when formatting it:
dotnet tool install -g fantomas-tool --add-source https://www.myget.org/F/fantomas/api/v3/index.json --framework netcoreapp3.1 --version 4.0.0-alpha-012

Source will be formatted using this command:
fantomas --recurse src/GWallet.Backend/

Things that would need to be fixed manually before merging this to master:
- We can drop parens in many if statements, e.g.: StratumClient.fs'
CreateVersion's, ServerManager.fs' GetDummyBalanceAction, FTPC.fs'
FTPC type, EtherAccount.fs' GetTransactionCount
- Drop parents in ReadAllText calls of Account.fs
- Many raise lines should use <|, e.g. in WarpKey.fs, UtxoCoinAccount.fs,
and ElectrumServer.fs
- UtxoCoinAccount.fs' EstimateFees unneeded use of |> with 'head'

Fantomas issues from geewallet's wishlist:
- fsprojects/fantomas#712
- fsprojects/fantomas#908
- fsprojects/fantomas#684
- fsprojects/fantomas#964

Issues not yet reported:
- There should be a setting called AlwaysSplitPipeOperatorInNewLine? but I actually don't understand
the consistency of this:
```
        use webClient = new WebClient()
        let serverListInJson = webClient.DownloadString urlToElectrumJsonFile
        ExtractServerListFromElectrumJsonFile serverListInJson
-           |> Seq.filter FilterCompatibleServer
+       |> Seq.filter FilterCompatibleServer

-    let DefaultBtcList =
-        Caching.Instance.GetServers Currency.BTC
-            |> List.ofSeq
+    let DefaultBtcList = Caching.Instance.GetServers Currency.BTC |> List.ofSeq
```
- MaxLineLength not being respected? look at how long some lines in
UtxoCoinAccount.fs' GetAccountFromFile are.
- UtxoCoinAccount.fs' TransactionOutpoint.ToCoin() should start on next
line.
- Why cut `truncated` var assignment in Formatting.fs'
DecimalAmountTruncating func?
- FaultTolerantParallelClient.fs' Runner.Run is tooooooo long
- Moving commend comment of FTPC.fs' CustomCancelSource's Dispose func
- This stupid diff adding an unneeded space:
```
             return! faultTolerantEtherClient.Query
                         (FaultTolerantParallelClientDefaultSettings
                             ServerSelectionMode.Fast
-                            currency
-                            (Some (AverageBetweenResponses (minResponsesRequired, AverageGasPrice))))
+                             currency
+                             (Some (AverageBetweenResponses (minResponsesRequired, AverageGasPrice))))
                         web3Funcs
```
- This stupid 3-space indentation:
```
-                if not (account.Currency.IsEtherBased()) then
-                    failwith <| SPrintF1 "Currency %A not ether based and not UTXO either? not supported, report this bug (estimatefee)"
-                        account.Currency
+                if not (account.Currency.IsEtherBased ()) then
+                    failwith
+                    <| SPrintF1
+                        "Currency %A not ether based and not UTXO either? not supported, report this bug (estimatefee)"
+                           account.Currency
```
- (Investigate) FSharpUtil.option{} that contains a `do! if...`, WAT
- Excessive EOLs in ElectrumClient.fs (one extra addition I didn't even add
to this commit)
- In a lock() statement, it should allow placing the ending `)` in its own
line at the end, in the same column where `lock` starts.

Last but not least, investigate if alpha-012 contains unwanted things like
311bff817f89f8b47c0799eb7474da886175ef15, otherwise we might need to go
back to 04c48d5, which should be
alpha-011 with these fantomas-config.json settings:
{
  "IndentSpaceNum":4,
  "PageWidth":80,
  "SemicolonAtEndOfLine":false,
  "SpaceBeforeParameter":true,
  "SpaceBeforeLowercaseInvocation":true,
  "SpaceBeforeUppercaseInvocation":true,
  "SpaceBeforeClassConstructor":true,
  "SpaceBeforeMember":true,
  "SpaceBeforeColon":false,
  "SpaceAfterComma":true,
  "SpaceBeforeSemicolon":false,
  "SpaceAfterSemicolon":true,
  "IndentOnTryWith":true,
  "SpaceAroundDelimiter":true,
  "MaxIfThenElseShortWidth":0,
  "MaxInfixOperatorExpression":80,
  "MaxRecordWidth":0,
  "MaxFunctionBindingWidth":0,
  "MaxValueBindingWidth":80,
  "MultilineBlockBracketsOnSameColumn":true,
  "NewlineBetweenTypeDefinitionAndMembers":true,
  "KeepIfThenInSameLine":true,
  "StrictMode":false
}

.editorconfig

@@ -0,0 +1,24 @@
+[*.fs]
+indent_size=4,
+max_line_length=80,
+fsharp_semicolon_at_end_of_line=false
+fsharp_space_before_parameter=true
+fsharp_space_before_lowercase_invocation=true
+fsharp_space_before_uppercase_invocation=true
+fsharp_space_before_class_constructor=true
+fsharp_space_before_member=true
+fsharp_space_before_colon=false
+fsharp_space_after_comma=true
+fsharp_space_before_semicolon=false
+fsharp_space_after_semicolon=true
+fsharp_indent_on_try_with=true
+fsharp_space_around_delimiter=true
+fsharp_max_if_then_else_short_width=0
+fsharp_max_infix_operator_expression=80
+fsharp_max_record_width=0
+fsharp_max_function_binding_width=0
+fsharp_max_value_binding_width=80
+fsharp_multiline_block_brackets_on_same_column=true
+fsharp_newline_between_type_definition_and_members=true
+fsharp_keep_if_then_in_same_line=true
+fsharp_strict_mode=false

src/GWallet.Backend/AccountTypes.fs

@@ -10,9 +10,10 @@ type WatchWalletInfo =
 
 type FileRepresentation =
     {
-        Name: string;
-        Content: unit->string;
+        Name: string
+        Content: unit -> string
     }
+
     static member FromFile (file: FileInfo) =
         {
             Name = Path.GetFileName file.FullName
@@ -21,59 +22,63 @@ type FileRepresentation =
 
 type ConceptAccount =
     {
-        Currency: Currency;
-        FileRepresentation: FileRepresentation;
-        ExtractPublicAddressFromConfigFileFunc: FileRepresentation->string;
+        Currency: Currency
+        FileRepresentation: FileRepresentation
+        ExtractPublicAddressFromConfigFileFunc: FileRepresentation -> string
     }
 
 type AccountKind =
     | Normal
     | ReadOnly
     | Archived
-    static member All() =
+
+    static member All () =
         seq {
             yield Normal
             yield ReadOnly
             yield Archived
         }
 
 type IAccount =
-    abstract member Currency: Currency with get
-    abstract member PublicAddress: string with get
+    abstract Currency: Currency
+    abstract PublicAddress: string
 
 [<AbstractClass>]
-type BaseAccount(currency: Currency, accountFile: FileRepresentation,
-                 fromAccountFileToPublicAddress: FileRepresentation -> string) =
-    member val AccountFile = accountFile with get
+type BaseAccount (currency: Currency,
+                  accountFile: FileRepresentation,
+                  fromAccountFileToPublicAddress: FileRepresentation -> string) =
+    member val AccountFile = accountFile
 
-    abstract member Kind: AccountKind
+    abstract Kind: AccountKind
 
     interface IAccount with
-        member val Currency = currency with get
-        member val PublicAddress =
-            fromAccountFileToPublicAddress accountFile with get
+        member val Currency = currency
+        member val PublicAddress = fromAccountFileToPublicAddress accountFile
 
 
-type NormalAccount(currency: Currency, accountFile: FileRepresentation,
-                   fromAccountFileToPublicAddress: FileRepresentation -> string) =
+type NormalAccount (currency: Currency,
+                    accountFile: FileRepresentation,
+                    fromAccountFileToPublicAddress: FileRepresentation -> string) =
     inherit BaseAccount(currency, accountFile, fromAccountFileToPublicAddress)
 
-    member internal __.GetEncryptedPrivateKey() =
-        accountFile.Content()
+    member internal __.GetEncryptedPrivateKey () =
+        accountFile.Content ()
 
     override __.Kind = AccountKind.Normal
 
-type ReadOnlyAccount(currency: Currency, accountFile: FileRepresentation,
-                     fromAccountFileToPublicAddress: FileRepresentation -> string) =
+type ReadOnlyAccount (currency: Currency,
+                      accountFile: FileRepresentation,
+                      fromAccountFileToPublicAddress: FileRepresentation -> string) =
     inherit BaseAccount(currency, accountFile, fromAccountFileToPublicAddress)
 
     override __.Kind = AccountKind.ReadOnly
 
-type ArchivedAccount(currency: Currency, accountFile: FileRepresentation,
-                     fromAccountFileToPublicAddress: FileRepresentation -> string) =
+type ArchivedAccount (currency: Currency,
+                      accountFile: FileRepresentation,
+                      fromAccountFileToPublicAddress: FileRepresentation -> string) =
     inherit BaseAccount(currency, accountFile, fromAccountFileToPublicAddress)
 
-    member internal __.GetUnencryptedPrivateKey() =
-        accountFile.Content()
+    member internal __.GetUnencryptedPrivateKey () =
+        accountFile.Content ()
 
     override __.Kind = AccountKind.Archived

src/GWallet.Backend/BlockExplorer.fs

@@ -10,34 +10,33 @@ module BlockExplorer =
 
     let GetTransactionHistory (account: IAccount): Uri =
         let baseUrl =
-              match account.Currency with
-              | Currency.BTC ->
-                  // SmartBit explorer is built on top of NBitcoin: https://github.com/ProgrammingBlockchain/ProgrammingBlockchain/issues/1
-                  "https://www.smartbit.com.au/address/"
-              | Currency.LTC ->
-                  // because the more popular https://live.blockcypher.com/ltc/ doesn't seem to have segwit support
-                  "https://chainz.cryptoid.info/ltc/address.dws?"
-              | Currency.ETH ->
-                  // most popular one...
-                  "https://etherscan.io/address/"
-              | Currency.ETC ->
-                  // the only one? minergate.com seems to only show blocks, not addresses
-                  "https://gastracker.io/addr/"
-              | Currency.SAI | Currency.DAI ->
-                  SPrintF1 "https://etherscan.io/token/%s?a=" (TokenManager.GetTokenContractAddress account.Currency)
-        Uri(baseUrl + account.PublicAddress)
+            match account.Currency with
+            | Currency.BTC ->
+                // SmartBit explorer is built on top of NBitcoin: https://github.com/ProgrammingBlockchain/ProgrammingBlockchain/issues/1
+                "https://www.smartbit.com.au/address/"
+            | Currency.LTC ->
+                // because the more popular https://live.blockcypher.com/ltc/ doesn't seem to have segwit support
+                "https://chainz.cryptoid.info/ltc/address.dws?"
+            | Currency.ETH ->
+                // most popular one...
+                "https://etherscan.io/address/"
+            | Currency.ETC ->
+                // the only one? minergate.com seems to only show blocks, not addresses
+                "https://gastracker.io/addr/"
+            | Currency.SAI
+            | Currency.DAI ->
+                SPrintF1 "https://etherscan.io/token/%s?a=" (TokenManager.GetTokenContractAddress account.Currency)
+
+        Uri (baseUrl + account.PublicAddress)
 
     let GetTransaction (currency: Currency) (txHash: string): Uri =
         let baseUrl =
-              match currency with
-              | Currency.BTC ->
-                  "https://www.smartbit.com.au/tx/"
-              | Currency.LTC ->
-                  "https://chainz.cryptoid.info/ltc/tx.dws?"
-              | Currency.ETH ->
-                  "https://etherscan.io/tx/"
-              | Currency.ETC ->
-                  "https://gastracker.io/tx/"
-              | Currency.DAI | Currency.SAI ->
-                  "https://etherscan.io/tx/"
-        Uri(baseUrl + txHash)
+            match currency with
+            | Currency.BTC -> "https://www.smartbit.com.au/tx/"
+            | Currency.LTC -> "https://chainz.cryptoid.info/ltc/tx.dws?"
+            | Currency.ETH -> "https://etherscan.io/tx/"
+            | Currency.ETC -> "https://gastracker.io/tx/"
+            | Currency.DAI
+            | Currency.SAI -> "https://etherscan.io/tx/"
+
+        Uri (baseUrl + txHash)