Android: GameController input

[tuxuser]

Test / refactor controller gamecontroller input code.

[tuxuser]

Maybe this implementation can be reused: https://github.com/OpenXbox/xbox-client-android/blob/master/SmartGlass.Nano.Droid/StreamActivity.cs

[tuxuser]

Or this: https://github.com/moonlight-stream/moonlight-android/tree/master/app/src/main/java/com/limelight/binding/input