Add Simplified Chinese as a system language

The installer asks for the language before the keyboard, and
Setup > Language (omarchy language en|zh) switches it later. Under
zh_CN the menu reads its labels from omarchy-menu.zh-cn.jsonc, the
shell from I18nZh.js through I18n.tr, and notifications are worded
by their sender through omarchy-text, which reads the same table.
User text is never translated.

bin/omarchy-games-retro-install

@@ -10,7 +10,7 @@ if (( $# == 0 )); then
   mapfile -t cores < <(omarchy-games-retro-cores)
 
   if (( ${#cores[@]} == 0 )); then
-    omarchy-notification-send -g 󰯉 "No RetroArch cores found" "/usr/lib/libretro"
+    omarchy-notification-send -g 󰯉 "$(omarchy-text "No RetroArch cores found")" "/usr/lib/libretro"
     exit 1
   fi
 
@@ -69,4 +69,4 @@ EOF
 chmod +x "$desktop_file"
 update-desktop-database "$desktop_dir" &>/dev/null || true
 
-omarchy-notification-send -g 󰯉 "$game_name installed" "Start it with Super + Space"
+omarchy-notification-send -g 󰯉 "$(omarchy-text "%1 installed" "$game_name")" "$(omarchy-text "Start it with Super + Space")"