feat(auth): implement authentication service, guards, and interceptors

- Add AuthService for handling login, registration, and session management.
- Create auth guards to protect routes based on authentication status.
- Implement auth interceptor to attach JWT token to HTTP requests and handle 401 errors.
- Add unit tests for AuthService, guards, and interceptor.
- Create login and registration components with form validation and error handling.
- Update routing to include guards for login and registration pages.

src/app/app.config.ts

@@ -1,9 +1,11 @@
-import { provideHttpClient, withFetch } from '@angular/common/http';
+import { provideHttpClient, withFetch, withInterceptors } from '@angular/common/http';
 import { ApplicationConfig, provideAppInitializer, provideBrowserGlobalErrorListeners } from '@angular/core';
 import { provideRouter } from '@angular/router';
 import { provideClientHydration } from '@angular/platform-browser';
 
 import { routes } from './app.routes';
+import { authBootstrap } from './core/services/auth/auth-bootstrap';
+import { authInterceptor } from './core/services/auth/auth.interceptor';
 import { tenantBootstrap } from './core/services/tenant-bootstrap';
 
 export const appConfig: ApplicationConfig = {
@@ -11,7 +13,8 @@ export const appConfig: ApplicationConfig = {
     provideBrowserGlobalErrorListeners(),
     provideRouter(routes),
     provideClientHydration(),
-    provideHttpClient(withFetch()),
+    provideHttpClient(withFetch(), withInterceptors([authInterceptor])),
+    provideAppInitializer(authBootstrap),
     provideAppInitializer(tenantBootstrap)
   ]
 };