Move menu building to Stimulus (WIP)

TODO: cache menu container, build ontology and load templates from external HTML source.

js/utils/stimulus.js

@@ -2,6 +2,7 @@ import { Application } from '@hotwired/stimulus';
 import SettingController from '../controllers/settings_controller.js';
 import ToolbarController from '../controllers/toolbar_controller.js';
 import ClipperController from '../controllers/clipper_controller.js';
+import MenuController from '../controllers/menu_controller.js';
 
 /**
  * Initialize Stimulus controllers
@@ -11,4 +12,5 @@ export function initStimulus() {
     Stimulus.register("settings", SettingController);
     Stimulus.register("toolbar", ToolbarController);
     Stimulus.register("clipper", ClipperController);
+    Stimulus.register("menu", MenuController);
 }