WMR default binding, Toggle Chaperone Action, frame timing graph, prox sensor back-end (#182)

* perf graph overlay/checkbox added

* added toggle Chaperone action

* toggle chaperone non-functional

* fixed chaperone toggle action const to once

* Added Proximity Sensor Action back-end, not implemented via logic Until fixed by valve

* added default WMR controller profile

* formated

* formated steamvrtabcontroller.h

* fixed un-intended change

src/tabcontrollers/VideoTabController.cpp

@@ -172,4 +172,4 @@ void VideoTabController::setOpacityValue()
     }
     emit brightnessValueChanged( m_brightnessValue );
 }
-} // namespace advsettings
+} // namespace advsettings