Implemented following stuff

- Basic Material Design
- Default Component to see anything
- theme switching between light and dark
- language change between german and english

src/app/app.config.ts

@@ -1,12 +1,37 @@
-import { ApplicationConfig, provideBrowserGlobalErrorListeners, provideZonelessChangeDetection } from '@angular/core';
+import {ApplicationConfig, provideBrowserGlobalErrorListeners, provideZonelessChangeDetection} from '@angular/core';
 import { provideRouter } from '@angular/router';
 
 import { routes } from './app.routes';
+import {provideAnimations} from '@angular/platform-browser/animations';
+import {provideHttpClient} from '@angular/common/http';
+import {provideTranslateService} from '@ngx-translate/core';
+import {provideTranslateHttpLoader} from '@ngx-translate/http-loader';
+import {Constants} from './constants/Constants';
+
+
+const INITIAL_LANG = getInitialLang();
 
 export const appConfig: ApplicationConfig = {
   providers: [
     provideBrowserGlobalErrorListeners(),
     provideZonelessChangeDetection(),
-    provideRouter(routes)
+    provideRouter(routes),
+    provideAnimations(),
+    provideHttpClient(),
+    provideTranslateService({
+      lang: INITIAL_LANG,
+      fallbackLang: 'en',
+      loader: provideTranslateHttpLoader({
+        prefix: 'assets/i18n/',
+        suffix: '.json'
+      })
+    }),
   ]
 };
+
+function getInitialLang(): string {
+  const saved = localStorage.getItem(Constants.LANGUAGE_KEY);
+  if (saved) return saved;
+  const nav = typeof navigator !== 'undefined' ? navigator.language?.toLowerCase() : 'en';
+  return nav?.startsWith('de') ? 'de' : 'en';
+}