Add to audio stream actions (Alarm Volume, Media Volume etc.) options for toggle mute, mute and unmute the stream
Help for the actions mentioning that for mute set the volume to 0. But how to ummute, how came back to previous volume setting? This can use method described here: https://developer.android.com/reference/android/media/AudioManager.html#ADJUST_TOGGLE_MUTE
ADJUST_TOGGLE_MUTE, ADJUST_UNMUTE, ADJUST_MUTE
