[Dev] Android Camera2 Flash Control

[onuralpszr]

• Check front/back camera for is flash exist

• Set enable/disable flash control

• Error check for avoid exception for flash control

• Ref Links :

• https://stackoverflow.com/questions/34699273/android-turn-on-off-camera-flash-programmatically-with-camera2

• https://stackoverflow.com/questions/37482014/android-camera2-the-easiest-way-to-turn-on-the-torch-light