cellGem: expose fake PS Move rotation cone to settings

[Megamouse]

• Add new dynamic setting for fake PS Move rotation cone extent
• Add the setting to the home menu (too lazy to add it to the real dialog for now)

This setting can be used to improve the PS Move cursor movement speed in certain games when using one of the fake PS Move handlers.
The higher the value (angle in °), the faster the cursor will move.
This only works if the game uses quaternion ortientation to decide on the cursor position.

[kubacAkaGoomba]

It would be cool to have separate sliders for horizontal and vertical mouse movements. For example, while using a Mouse PS Move handler and a cursor tool from Move Pack DLC in LittleBigPlanet 2, I've noticed that the horizontal cursor movement matches best at 75° value of Fake PS Move Rotation Cone, whereas the vertical cursor movement matches best at 47° value of Fake PS Move Rotation Cone.

Here's 47° Fake PS Move Rotation Cone setting footage:

47_degrees.mp4

And here's 75° Fake PS Move Rotation Cone setting footage:

75_degrees.mp4