Voice Shutter: Voice triggered snapshots

If one of the pre-specified hotwords is detected, fire the shutter
and take a picture

Change-Id: I8fc716c836728f82fd69741a6c1c7864d86934c4
Camera : Timer Snapshot

Allow user to take a snapshot after a certain amount of time.
Credits : Michael Simon for the base port
	  David Van Tonder for indicator icon

Change-Id: Ic50bf1c1f7fd85d8c48dac3e51766aeff2b381ea