Allow Nunchuck stick for controlling mouse

[PureTryOut]

First of all, awesome project! I know it's not in development anymore (which is a shame) but I'm having a hell of a lot of fun with it. I still hope some stuff can be considered for addition.

I'd like to use the Nunchuck for controlling the mouse (maybe as fall-back?). Together with an onscreen keyboard and A and B on the Wiimote mapped to left and right mouse button, it would probably make for a full alternative to the mouse.