Set up environment-based configurations for API and builds.

Replaced hardcoded API URLs with environment-specific configurations. Added new environments (development, beta, production) with respective settings. Updated build scripts and Angular file replacements to support environment-based builds.

frontend/src/app/team/team.component.ts

@@ -5,6 +5,7 @@ import {CommonModule, NgOptimizedImage} from '@angular/common';
 import {HeaderComponent} from '../header/header.component';
 import {CookieService} from 'ngx-cookie-service';
 import {map, Observable, shareReplay} from 'rxjs';
+import {environment} from '../../environments/environment';
 
 @Component({
   selector: 'app-team',
@@ -16,7 +17,7 @@ import {map, Observable, shareReplay} from 'rxjs';
   ],
   providers: [
     CookieService,
-    {provide: BASE_PATH, useValue: 'http://localhost:8080/'}
+    {provide: BASE_PATH, useValue: environment.apiUrl}
   ],
 
   templateUrl: './team.component.html',