add missing Games to userdirs

install/etc/skel/.config/user-dirs.dirs

@@ -13,3 +13,5 @@ XDG_DOCUMENTS_DIR="$HOME/documents"
 XDG_MUSIC_DIR="$HOME/music"
 XDG_PICTURES_DIR="$HOME/pictures"
 XDG_VIDEOS_DIR="$HOME/videos"
+XDG_GAMES_DIR="$HOME/games"
+