chore: do not track user settings

Author: ZdenekM

.gitignore

@@ -9,6 +9,7 @@
 [Bb]uilds/
 [Ll]ogs/
 [Mm]emoryCaptures/
+/[Uu]ser[Ss]ettings/
 /arcor2_AREditor/[Aa]ssets/[Ss]ubmodules*
 
 # Never ignore Asset meta data