Integrate --min-hops with PersistentConfiguration

[utkarshg6]

This card is a child of #567 and is blocked by #690.

Make a place for it in PersistentConfiguration and modify SetupReporter to load it from the database if it isn't specified anywhere with higher priority. Remember to add a database migration for the new configuration property and bump the CURRENT_SCHEMA_VERSION constant.

[utkarshg6]

Testing Outline

Log Level: Trace

1. Test Case 1: Default Value

   • Start the Node (a new Node Installation) without providing any value for --min-hops.
   • Check the Database to verify if the default value of 3 has been saved.
   • Browse the internet and share the logs for this case.

2. Test Case 2: Custom Value

   • Start the Node with a smaller value for --min-hops, e.g., 1 or 2.
   • Check the Database to confirm whether the provided value has been saved.
   • Join the network and transfer some data.
   • Browse the internet and share the logs for this case.

3. Test Case 3: Use Database Value

   • Start the Node (continuing from the test case 2) without providing any value for --min-hops.
   • Make sure even though you didn't provide any value with the parameter, the value stays the same that you've set in the previous test case.
   • Browse the internet and share the logs for this case.

Here's the way to check the database configuration:

• Run the node with the desired args, for example:

sudo MASQNode --ip 1.2.3.4 --min-hops 2

• Kill the command's execution using `Ctrl + C.

• Use --dump-config to see the database configuration

MASQNode --dump-config

• You'll see an output like this on the terminal screen

{
"blockchainServiceUrl": null,
"chainName": "polygon-mainnet",
"clandestinePort": "7184",
"consumingWalletPrivateKey": null,
"earningWalletAddress": null,
"exampleEncrypted": null,
"gasPrice": "1",
"mappingProtocol": null,
"minHopsCount": "2",
"neighborhoodMode": "standard",
"pastNeighbors": null,
"paymentThresholds": "1000000000|1200|1200|500000000|21600|500000000",
"ratePack": "172300000|1723000000|344600000|3446000000",
"scanIntervals": "600|600|600",
"schemaVersion": "8",
"startBlock": "14863650"
}