update openvr to action based input model

OpenVR has updated its input model to be action based and now supports action binding and customization within the OpenVR user interface. As such, rework the device based event model to also support actions.

Have event creators set the event type on event data instead of having subclasses for each event data event type.

Fix world rotation code for multitouch.

Update widget event code to be based off a trigger event as opposed to a specific hardware device such as right trigger. Update event dispatch code to better handle event id. Update widget event processing as needed to track move events based on the original device that initiated to action.