Add level to flashlight tile

Flag: com.android.systemui.flashlight_strength
Fixes: 399470157
Fixes: 399465570
Fixes: 399492164
Fixes: 399468001
Test: atest FlashlightTileWithLevelTest
Test: atest FlashlightTileMapperTest FlashlightTileDataInteractorTest FlashlightTileUserActionInteractorTest
Change-Id: If2e96ca6ed1d841210f307fbe1b8f646b0292816
19 files changed