Implement User Authentication

[craigbourne]

Currently, the LMS allows user registration but doesn't have proper authentication. Need to implement a secure authentication system.

Tasks:

• [x] Implement login functionality
• [x] Create JWT token generation and validation
• [x] Add protected routes that require authentication
• [x] Implement logout functionality
• [ ] Add password hashing for security
• [ ] Create error handling for invalid login attempts

This feature is necessary for securing the LMS and allowing personalised user experiences.

[craigbourne]

Implemented basic login functionality. Next step: JWT token generation.

[craigbourne]

Create JWT token generation and validation

[craigbourne]

Protected routes added and registered users can login and logout