feat: upgrade to Angular 16.1

frontend/app/src/test.ts

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022 StApps
+ * Copyright (C) 2018, 2019 StApps
  * This program is free software: you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
  * Software Foundation, version 3.
@@ -12,7 +12,6 @@
  * You should have received a copy of the GNU General Public License along with
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
-// This file is required by karma.conf.js and loads recursively all the .spec and framework files
 import 'zone.js/testing';
 import {getTestBed} from '@angular/core/testing';
 import {
@@ -20,20 +19,4 @@ import {
   platformBrowserDynamicTesting,
 } from '@angular/platform-browser-dynamic/testing';
 
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-declare const __karma__: any;
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-declare const require: any;
-
-// prevent Karma from runnint prematurely
-// eslint-disable-next-line @typescript-eslint/no-empty-function
-__karma__.loaded = function () {};
-
-// First, initialize the Angular testing environment.
 getTestBed().initTestEnvironment(BrowserDynamicTestingModule, platformBrowserDynamicTesting());
-// Then we find all the tests.
-const context = require.context('./', true, /\.spec\.ts$/);
-// And load the modules.
-context.keys().map(context);
-
-__karma__.start();