Add Stack project template

Relates to #4

LICENSE

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+Copyright (c) 2019 IOHK
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to
+do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+

app/server/Main.hs

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+module Main where
+
+import Prelude
+import Cardano.Wallet (sayHello)
+
+main :: IO ()
+main = sayHello

cardano-wallet.cabal

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+name:                cardano-wallet
+version:             2.0.0
+synopsis:            The Wallet Backend for a Cardano node.
+description:         Please see README.md
+homepage:            https://github.com/input-output-hk/cardano-wallet
+author:              IOHK Engineering Team
+maintainer:          [email protected]
+copyright:           2019 IOHK
+license:             MIT
+license-file:        LICENSE
+category:            Web
+build-type:          Simple
+extra-source-files:  README.md
+cabal-version:       >=1.10
+
+library
+  default-language:
+      Haskell2010
+  default-extensions:
+      NoImplicitPrelude
+      OverloadedStrings
+  ghc-options:
+      -Wall
+      -Werror
+      -Wcompat
+      -fwarn-redundant-constraints
+
+  build-depends:
+      base
+
+    -- Hackage Dependencies
+    , aeson
+    , aeson-pretty
+    , base16-bytestring
+    , base58-bytestring
+    , bytestring
+    , cborg
+    , containers
+    , cryptonite
+    , deepseq
+    , digest
+    , generic-lens
+    , http-client
+    , memory
+    , microlens
+    , text
+    , time
+    , transformers
+
+    -- Other Project Dependencies
+    , cardano-crypto
+
+  hs-source-dirs:
+      src
+  exposed-modules:
+      Cardano.Wallet
+  other-modules:
+      Paths_cardano_wallet
+
+
+executable cardano-wallet-server
+  default-language:
+      Haskell2010
+  default-extensions:
+      NoImplicitPrelude
+      OverloadedStrings
+  ghc-options:
+      -threaded -rtsopts
+      -Wall
+      -O2
+
+  build-depends:
+      base
+    , cardano-wallet
+
+  hs-source-dirs:
+      app/server
+  main-is:
+      Main.hs
+
+test-suite unit
+  default-language:
+      Haskell2010
+  default-extensions:
+      NoImplicitPrelude
+      OverloadedStrings
+  ghc-options:
+      -threaded -rtsopts
+      -Wall
+      -Werror
+      -O2
+
+  build-depends:
+      base
+    , cardano-wallet
+  type:
+     exitcode-stdio-1.0
+  hs-source-dirs:
+      test/unit
+  main-is:
+      Main.hs

src/Cardano/Wallet.hs

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+module Cardano.Wallet
+  ( sayHello
+  ) where
+
+import Prelude
+
+sayHello :: IO ()
+sayHello = putStrLn "Hello, brave new world!"

stack.yaml

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+resolver: lts-13.8
+packages:
+- .
+
+extra-deps:
+- base58-bytestring-0.1.0
+- generic-lens-1.1.0.0
+
+- git: https://github.com/input-output-hk/cardano-crypto
+  commit: 3c5db489c71a4d70ee43f5f9b979fcde3c797f2a

test/unit/Main.hs

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+import Prelude
+
+main :: IO ()
+main = putStrLn "Test suite not yet implemented"