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/note.js

@@ -0,0 +1,29 @@
+// SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
+//
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { Model } from '@converse/skeletor/src/model.js'
+
+/**
+ * A chat room note.
+ * @class
+ * @namespace _converse.exports.ChatRoomNote
+ * @memberof _converse
+ */
+class ChatRoomNote extends Model {
+  idAttribute = 'id'
+
+  async saveItem () {
+    console.log('Saving note ' + this.get('id') + '...')
+    await this.collection.chatroom.noteManager.saveItem(this)
+    console.log('Note ' + this.get('id') + ' saved.')
+  }
+
+  async deleteItem () {
+    return this.collection.chatroom.noteManager.deleteItems([this])
+  }
+}
+
+export {
+  ChatRoomNote
+}