Enable to control UI by airmouse.

[andy840119]

In compare of current keymap, one key to one function, it might be hard to use.
So new idea is creating another way to control by fewer key.

1. should have key config to config Up, down, left, right, enter, back and some function key.
2. enable to have gesture by mouse(optional, not implement, and user can select should use air-mouse mode or not)
3. creating some like ControlKeyContainer to highlight selected / hovered container.
   user can selected different UI button by direction button in keyboard / airmouse, press ok to trigger. press back to pack to previous area.

[andy840119]

This issue might not be so high priority, might move to V2

[andy840119]

Also, might have injection to pass current focus component between different layer.
And injection should be able to record all step user works around.
e.g:
Button >> panel item1 >> confirm button(current focus on)

So it should be able to make focus back to panel item1 if user trying to back to previous interact component.