ChaosLab: Add annotation to be used when adding new features to the lab.

This should be used when adding completely new features to ChameleonOS,
and not for simple things that expand upon a current feature.

Change-Id: I37d7250424967d41ecfb885120627f5397b2f804

Conflicts:
	packages/SystemUI/res/drawable/trigger_region.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java