Camera: disable snapshot while recording (credit: amphorion)

Change-Id: Ia4db897bc29126d036675bb39b96806936206b8e
Camera: set SAVE_TASK_LIMIT to 2 (credit: amphorion)

Change-Id: I84c436051fbc593fe643a37123270c2b74f54c9f
Add 'isVideoSnapshotSupported' switch

Signed-off-by: Sultanxda <sultanxda@gmail.com>
Merge code from CAF in an attempt to fix the blackscreen when rotating the screen while opening the Camera app