Motion Matching: Fixed several bugs and improved anim graph node RPE layout
* Fixed several crashes that happened when adjusting the cost function in the UI.
* Automatically hide the trajectory path radius and path speed properties when the mode is set to target-based.
* Re-ordered the properties for better grouping.
Motion Matching: Moved discard event check into consolidated IsFrameDiscarded() method
* Moved the extract events call and the check for a discard frame event to the IsFrameDiscarded() function.
* Added class description for the frame database and ported the comments to //! and //<
Motion Matching: Fixed crash on empty KD-tree
Motion Matching: Automatic target mode for trajectory query
* Consolidated the different automatic path generation modes into a single automatic demo mode.
* Moved the static phase variable to a member so that multiple instances won't follow the same path and speedup the phase increment.
Motion Matching: Added class description and member comments
* Added description for Feature, FeatureMatrix, FeatureTrajectory classes.
* Changed default residual type to absolute as that results in better visual quality.
* Moved to //! doxygen style code to not affect /**/ sourounding temporary code commenting.
Benjamin Jillich
67fcf42268