chaged structure and added intsal script

i3/overlay-menu.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+# Fullscreen overlay menu
+OPTIONS="Reboot\nShutdown\nLock Screen\nCancel"
+CHOICE=$(echo -e $OPTIONS | rofi -dmenu -fullscreen -p "Action" -lines 4 -bw 2 -kb-accept-entry 'Return' -kb-cancel 'Escape')
+
+case "$CHOICE" in
+    "Reboot") systemctl reboot ;;
+    "Shutdown") systemctl poweroff ;;
+    "Lock Screen") i3lock ;;
+    "Cancel"|"") exit 0 ;;
+esac
+