Add interaction entity node component

[ensisoft]

trafficstars

Add interaction entity node component that can be used to interact with through some means of native input such as mouse/keyboard/touch events.

This would provide a higher level of interaction capability to the application so that it would not have to rely on low level keyboard/mouse/touch events. The API towards the game would something like "interaction component X was clicked" or "interaction component X was dragged"