3 add pointer orientation

[LariWa]

Add Pointer Orientation for TUIO 2.0

Pointer Preview on Hover

• added Tuio20PointerPreview which appears when hovering with the mouse
• users can set the initial pointer angle using the scroll wheel
• when spawning a new pointer, the previewed angle is applied
  

Jitter Slider

• added SliderManager to manage shared slider behavior (min/max labels, value display)
• added PointerOrientationJitter to add random jitter to pointer orientations, simulating recognition noise

Known Issues / Future Improvements

Pointer Preview

• currently supports mouse input only, allowing only a single preview at a time
  → this limits testing for multi-pointer and gesture interactions

Jitter Slider

• currently the slider is always visible, but only affects pointer behavior when TUIO 2.0 is active
  → could be moved to an Expert Mode or Advanced Settings toggle for a cleaner interface