Synchronize laser mode signal with TrayMenu and implement SVG playing/shaking animation states

[mx57]

This change implements:

1. laser_mode_changed = Signal(bool) on InputManager to dynamically synchronize the checkmark status of the 'Лазерная указка' menu item in TrayMenu.
2. Procedural SVG animation handling in AnimationManager.update_frame() for the playing (swaying & bouncing) and shaking (intense random vibration & scaling) pet states.
3. Unit tests in tests/test_utils.py verifying signal emission, menu checkmark synchronization, and SVG frame rendering for playing and shaking states.

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PR created automatically by Jules for task 2604008742713326464 started by @mx57

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