Ignored ProGrids settings

UOP1_Project/.gitignore

 # Package related files that can be ignored or are better kept user-specific
 ProjectSettings/Packages/com.unity.probuilder/Settings.json
 ProjectSettings/Packages/com.unity.polybrush/Settings.json
+/ProjectSettings/Packages/com.unity.progrids/Settings.json
 Assets/Polybrush Data*
 Assets/PolybrushData*