Add custom middleware for authentication in MVC architecture

- Implemented  middleware to restrict access to protected routes based on user authentication.
- Integrated middleware with routes like  and  to enforce secure access.
- Configured session-based authentication to track user login status effectively.
- Enhanced templates with conditional rendering based on user authentication state using Handlebars.
- Provided setup instructions for environment variables, database seeding, and running the application.
- Ensured unauthorized users are redirected to the login page, maintaining a secure and consistent workflow.