feat(auth): implement user authentication with JWT and NextAuth

- Added user registration and login functionality with JWT authentication.
- Created auth controller, service, and module in the backend.
- Implemented user model and user products management.
- Integrated NextAuth for session management on the frontend.
- Added middleware for protecting routes and handling public access.
- Updated frontend API routes to include authorization headers.
- Enhanced recipe and user product models to support ownership and visibility.
- Created registration and login pages in the frontend.
- Added necessary types for NextAuth session management.

frontend/types/next-auth.d.ts

@@ -0,0 +1,11 @@
+import type { DefaultSession } from 'next-auth';
+
+declare module 'next-auth' {
+  interface Session {
+    accessToken: string;
+    user: {
+      id: string;
+      name: string;
+    } & DefaultSession['user'];
+  }
+}