Implement a CLI command to change themes. (#136)

* Implement cli based theme applier.

* Remove references to old globalMousePos

* Use direct file path instead.

modules/bar/utils.ts

@@ -1,7 +1,5 @@
 import Gdk from 'gi://Gdk?version=3.0';
 
-import { globalMousePos } from 'globals';
-
 export const closeAllMenus = () => {
     const menuWindows = App.windows
         .filter((w) => {