Add extension flag to configure version.properties inclusion in sourceSet

[mcwhitak]

Adding the version.properties file to the main sourceSet and subsequently including it in the output archive can cause issues with build reproducibility (ex: Java distro it was built with changes, despite resulting bytes being the same).

It would be helpful if the plugin exposed an extension config boolean includeVersionPropertiesInOutput (default: true) that could control this inclusion, as the file does not need to be included in the resulting artifact or sourceSet outputs in order for it to be useful by the versioning plugin itself.