First commit from FVE for Android Settings Handler integration with node...

....js.

These changes provide us to get/set the following settings:
- TTS rate
- TTS pitch
- Start/Stop Talkback
- Notification Volume (in order to increase Talkback volume)
- Change OS language (at the moment it not provide the set capability, it is only an ad hoc solution to be able to change tts language)
- Font Scale
- Enable Haptic Feedback
- Change the screen brightness (screen off time uses the same configuration)
- Screen rotation (first disabling autorotation setting)