[Added] Most of the frontend, split up backend services

frontend/src/app/app.config.ts

@@ -2,7 +2,11 @@ import { ApplicationConfig, provideZoneChangeDetection } from '@angular/core';
 import { provideRouter } from '@angular/router';
 
 import { routes } from './app.routes';
+import { provideHttpClient } from '@angular/common/http';
 
 export const appConfig: ApplicationConfig = {
-  providers: [provideZoneChangeDetection({ eventCoalescing: true }), provideRouter(routes)]
+  providers: [
+    provideZoneChangeDetection({ eventCoalescing: true }), 
+    provideRouter(routes),
+    provideHttpClient()]
 };