Implement Middleware to Protect Routes Requiring Authentication

[andrew21-mch]

Create middleware to protect routes that require user authentication. This middleware will ensure that only logged-in users can access specific pages, such as the dashboard and profile edit pages. If a user is not authenticated, they should be redirected to the login page.

Steps to Complete:

Create a PHP middleware function that checks if a user is authenticated by verifying session data.
Apply this middleware to all routes that require authentication.
Redirect unauthenticated users to the login page with an appropriate message.
Acceptance Criteria:

Only authenticated users can access protected routes.
Unauthenticated users are redirected to the login page.