Allowing multiple packages in the same package.swift file

[faogustavo]

Issue: https://github.com/touchlab/KMMBridge/issues/168

Summary

• We must support having multiple framework declarations in the same Package.swift file

Fix

• Created an extra property to the SPM configuration called perModuleVariablesBlock
  • This parameter works together with the useCustomPackageFile
  • When it's set to true, each configuration block will mention the package name it's publishing so it knows which block should be updated.
    • Check withMultipleModules test case

Testing

• ./gradlew test
• ./gradlew build