New moderator app WIP:

* #144: moderator notes WIP,
* plugin size: adding an API,
* refactoring the code from the task app, to create a new MUC App
  system.

conversejs/custom/plugins/notes/components/muc-note-app-view.js

@@ -0,0 +1,21 @@
+// SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
+//
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { api } from '@converse/headless'
+import { MUCApp } from '../../../shared/components/muc-app.js'
+import { tplMUCNoteApp } from '../templates/muc-note-app.js'
+
+/**
+ * Custom Element to display the Notes Application.
+ */
+export default class MUCNoteApp extends MUCApp {
+  enableSettingName = 'livechat_note_app_restore'
+  sessionStorangeShowKey = 'livechat-converse-note-app-show'
+
+  render () {
+    return tplMUCNoteApp(this, this.model)
+  }
+}
+
+api.elements.define('livechat-converse-muc-note-app', MUCNoteApp)