fix: handle `gradleArgs` as an array option

[farfromrefug]

This changes the way gradleArgs works. Now you can use either --gradleArgs=-PsplitEnabled --gradleArgs=-PabiFilters=arm64-v8a,armeabi-v7a or --gradleArgs=\"-PsplitEnabled -PabiFilters=arm64-v8a,armeabi-v7a\"

there is just duplicate code in the parsing handle multiple args in the same gradleArgs (necessary because otherwise gradle wont read them)

[farfromrefug]

superseded by #5774