Add Payload and Payload type columns to the settings
database. This includes extending preference controllers
to map their settings to UI components so that the
payload results can be consumed by a front end.
Change-Id: I889dcc4ff7793306718d12e1e5993386b58f21cc
Fixes: 33451851, 33390556
Test: RunSettingsRoboTests
- getNonIndexableKeys(Context) allow a SearchIndexProvider to tell which data
he does not want to index by providing a list of the data keys
- use this new API for SoundSettings and removing KEY_EMERGENCY_TONE related
settings if the device is not CDMA
- add a BaseSearchIndexProvider for code simplification
Change-Id: I23633ace1d7e390ee05fac0a5458a33e04e72d8d