Implement authentication system with NextAuth.js

[Revmagi]

Set up user authentication and role-based access control system.

Tasks

• Install and configure NextAuth.js
• Set up authentication providers
• Implement role-based access (Admin, Curator, User)
• Create login/register pages
• Add session management
• Implement route protection middleware

Acceptance Criteria

• Users can register and login
• Role-based access working
• Protected routes properly secured
• Session persistence working