Time rewind 2.0 - Unity package

+Optional drawer for particle settings (QOL)
+RewindManager is now Singleton for more convenient access
+RewindManager now acts more like manager when controlling RewindAbstract classes directly without events. The code should be now more readable and cleaner.
+Added more options in rewind manager (to pause/resume tracking, restarting tracking)
+Added more option to RewindBySlider (Slider prefab also contains new buttons where player can pause tracking, pause rewind, reset tracking etc...)
+Simplified particle tracking (enabler is now not needed)
+Added default option to track object active state
+It is now simple to change slider animation for custom duration. It is automatically updated based on values from RewindManager (RewindManager now also contains editor field for that)
+Renamed some variables for better clarity
+Code documentation update
+Added more error logging when system is used improperly

+Fixed missing reference in Slider
+Fixed unecessary garbage generation in velocity tracking system
+Fixed float imprecisions problems in Circular buffer
+Fixed instant rewinds issues