feat: Add version code and version name as a config

[farhaanbukhsh]

Description

The PR helps to configure the version code and version name through config files since releasing the app always changing the code is cumbersome while doing that with a config variables makes life easier.

Testing instructions

• Check out the PR in a clean checkout.
• Configure the Android SDK and Java as required by the project.
• Make sure you have dummy config file as pointed out in the readme
• Set these top-level values in the development config:

  VERSION_CODE: 42                                                                                                                                                                                                    
  VERSION_NAME: "2.3.4-test"                                                                                                                                                                                          

• Build:

  ./gradlew :app:assembleDevelopDebug 

• Inspect the generated APK using Android Studio’s Build → Analyze APK, then open AndroidManifest.xml.

• Manifest file should show the set version and code

Private Ref: https://tasks.opencraft.com/browse/BB-10453

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[tecoholic]

@farhaanbukhsh I am very confused here. Why are we converting VERSION_CODE to string, compare against a regex, check !isInt, to cast toInt and then validate the range?

Why can't we simply do?

def appVersionCode = config.getOrDefault("VERSION_CODE", 1)
if (!appVersionCode.isInteger() || appVersion < 1 || appVersion > 2100000000) {
    throw...
}

Is it something with the way Gradle parses the YAML? Does it not preserve integers?

[tecoholic]

Related to above comment, why do we need to keep it as a string and cast to int every time we need this value?