jingle: added the initial boilerplate code for the plugin.

Author: PawBud

src/converse.js

@@ -23,6 +23,7 @@ import "./plugins/controlbox/index.js";     // The control box
 import "./plugins/dragresize/index.js";     // Allows chat boxes to be resized by dragging them
 import "./plugins/fullscreen/index.js";
 import "./plugins/headlines-view/index.js";
+import "./plugins/jingle/index.js"          // Implements the jingle protocol
 import "./plugins/mam-views/index.js";
 import "./plugins/minimize/index.js";       // Allows chat boxes to be minimized
 import "./plugins/muc-views/index.js";      // Views related to MUC

src/plugins/jingle/index.js

@@ -0,0 +1,14 @@
+/**
+ * @description Converse.js plugin which adds XEP-0166 Jingle
+ * @copyright 2022, the Converse.js contributors
+ * @license Mozilla Public License (MPLv2)
+ */
+
+import { converse } from '@converse/headless/core';
+
+converse.plugins.add('jingle', {
+
+    initialize: function () {
+       
+    },
+});

src/shared/constants.js

@@ -11,6 +11,7 @@ export const VIEW_PLUGINS = [
     'converse-dragresize',
     'converse-fullscreen',
     'converse-headlines-view',
+    'converse-jingle',
     'converse-mam-views',
     'converse-minimize',
     'converse-modal',