ModQuickSettings: added Quick Record tile
Allows to quickly start recording of audio which can be max. 1 hour
long.
Recording is started by long-press on tile.
Single-press starts playback of recorded audio.

Since SystemUI has typically no permission for recording audio,
RecordingService was implemented that is triggered by intent sent
from QuickRecordTile to handle recording in user context.
This requires 2 additional permissions:
RECORD_AUDIO and WRITE_EXTERNAL_STORAGE.
READ_EXTERNAL_STORAGE permission was added for future use.

Inspired by RootBox.