feat(): new feature

frontend/src/app/app.config.ts

@@ -1,9 +1,28 @@
-import { ApplicationConfig, provideZoneChangeDetection } from '@angular/core';
+import { ApplicationConfig, LOCALE_ID, provideZoneChangeDetection } from '@angular/core';
 import { provideRouter } from '@angular/router';
 
 import { routes } from './app.routes';
-import {provideHttpClient} from '@angular/common/http';
+import { provideHttpClient } from '@angular/common/http';
+
+const resolveLocale = () => {
+  if (typeof navigator === 'undefined') {
+    return 'de-CH';
+  }
+  const languages = navigator.languages ?? [];
+  if (navigator.language === 'it-CH' || languages.includes('it-CH')) {
+    return 'it-CH';
+  }
+  if (navigator.language === 'de-CH' || languages.includes('de-CH')) {
+    return 'de-CH';
+  }
+  return 'de-CH';
+};
 
 export const appConfig: ApplicationConfig = {
-  providers: [provideZoneChangeDetection({ eventCoalescing: true }), provideRouter(routes), provideHttpClient()]
+  providers: [
+    provideZoneChangeDetection({ eventCoalescing: true }),
+    provideRouter(routes),
+    provideHttpClient(),
+    { provide: LOCALE_ID, useFactory: resolveLocale }
+  ]
 };