create function with auth

frontend/src/app/app.config.ts

@@ -2,12 +2,19 @@ import { ApplicationConfig, provideZoneChangeDetection } from '@angular/core';
 import { provideRouter, withComponentInputBinding } from '@angular/router';
 
 import { routes } from './app.routes';
-import { provideHttpClient } from '@angular/common/http';
+import {
+  HTTP_INTERCEPTORS,
+  provideHttpClient,
+  withInterceptors,
+  withInterceptorsFromDi,
+} from '@angular/common/http';
+import { AuthInterceptor } from './shared/interceptors/auth.interceptor';
 
 export const appConfig: ApplicationConfig = {
   providers: [
     provideZoneChangeDetection({ eventCoalescing: true }),
     provideRouter(routes, withComponentInputBinding()),
-    provideHttpClient(),
+    provideHttpClient(withInterceptorsFromDi()),
+    { provide: HTTP_INTERCEPTORS, useClass: AuthInterceptor, multi: true },
   ],
 };