hersbtluftwm: move exitmenu outside of qtile

.config/scripts/util/exitmenu

@@ -0,0 +1,23 @@
+#!/bin/bash
+menu="rofi -dmenu"
+choice=$(echo -e "shutdown\nrestart\nlogoff\nscreenlock" | $menu)
+
+case $choice in
+
+	shutdown)
+		sudo shutdown now
+		;;
+
+	restart)
+		sudo shutdown -r now
+		;;
+
+	logoff)
+		herbstclient quit
+		;;
+
+	screenlock)
+		i3lock -c 000000
+		;;
+
+	esac