feat: integrate angular-oauth2-oidc for authentication

- Added angular-oauth2-oidc package to package.json.
- Configured OAuth client in app.config.ts with resource server settings.
- Implemented login component with basic HTTP request to fetch products.
- Set up routing for the login component.
- Updated app component to initialize OAuth service and handle login.
- Modified default app settings to open and collapse sidenav by default.
- Removed placeholder content from app.html to streamline the initial view.

Web/src/app/app.routes.ts

@@ -1,3 +1,9 @@
 import { Routes } from '@angular/router';
+import { Login } from './login/login';
 
-export const routes: Routes = [];
+export const routes: Routes = [
+    {
+        path: 'login',
+        component: Login
+    }
+];