Final cleanup and documentation for material editor animation support

Co-authored-by: neph1 <7988802+neph1@users.noreply.github.com>

Author: Copilot

.gitignore

@@ -29,4 +29,4 @@ jdks/*.bin
 jdks/*.exe
 jdks/*.zip
 dist/
-/.nb-gradle/
+/.nb-gradle/MATERIAL_EDITOR_CHANGES.md