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/.vscode/launch.json

@@ -7,7 +7,8 @@
       "type": "chrome",
       "request": "launch",
       "preLaunchTask": "npm: start",
-      "url": "http://localhost:4200/"
+      "url": "http://localhost:4200/",
+      "webRoot": "${workspaceFolder}/Web",
     },
     {
       "name": "ng test",