Perf: Improve time to render of Nextcloud via lazy-loading

This will reduce the initial js bundle to be loaded on each NC page from 1.5MB to 150KB, with the rest of the code being immediately preloaded asynchronously

src/main.js

@@ -19,7 +19,6 @@
  */
 
 import Vue from 'vue'
-import NotificationsApp from './NotificationsApp.vue'
 
 // Styles
 import './styles/styles.scss'
@@ -30,9 +29,17 @@ Vue.prototype.n = n
 Vue.prototype.OC = OC
 Vue.prototype.OCA = OCA
 
+// eslint-disable-next-line
+__webpack_nonce__ = btoa(OC.requestToken);
+// eslint-disable-next-line
+__webpack_public_path__ = OC.linkTo('notifications', 'js/');
+
 export default new Vue({
 	el: '#notifications',
 	// eslint-disable-next-line vue/match-component-file-name
 	name: 'NotificationsApp',
-	render: h => h(NotificationsApp),
+	components: {
+		'NotificationsApp': () => import(/* webpackPreload: true */'./NotificationsApp.vue')
+	},
+	render: h => h('NotificationsApp'),
 })