refactor(app): convert root folder files to es6 (#4159)

app/index.js

@@ -0,0 +1,61 @@
+import './assets/css';
+import '@babel/polyfill';
+
+import angular from 'angular';
+import { UI_ROUTER_REACT_HYBRID } from '@uirouter/react-hybrid';
+
+import './matomo-setup';
+import analyticsModule from './angulartics.matomo';
+
+import './agent';
+import './azure/_module';
+import './docker/__module';
+import './edge/__module';
+import './portainer/__module';
+
+import { onStartupAngular } from './app';
+import { configApp } from './config';
+
+angular
+  .module('portainer', [
+    'ui.bootstrap',
+    'ui.router',
+    UI_ROUTER_REACT_HYBRID,
+    'ui.select',
+    'isteven-multi-select',
+    'ngSanitize',
+    'ngFileUpload',
+    'ngMessages',
+    'ngResource',
+    'angularUtils.directives.dirPagination',
+    'LocalStorageModule',
+    'angular-jwt',
+    'angular-json-tree',
+    'angular-loading-bar',
+    'angular-clipboard',
+    'ngFileSaver',
+    'luegg.directives',
+    'portainer.app',
+    'portainer.agent',
+    'portainer.azure',
+    'portainer.docker',
+    'portainer.kubernetes',
+    'portainer.edge',
+    'portainer.integrations',
+    'rzModule',
+    'moment-picker',
+    'angulartics',
+    analyticsModule,
+  ])
+  .run(onStartupAngular)
+  .config(configApp);
+
+if (require) {
+  const req = require.context('./', true, /^(.*\.(js$))[^.]*$/im);
+  req
+    .keys()
+    .filter((path) => !path.includes('.test'))
+    .forEach(function (key) {
+      req(key);
+    });
+}