Feature: Add Role-Based User Authentication (Alumni, Students, Administrators)

Description Introduce a secure authentication system to the alumni portal that supports multiple user roles. The feature should allow alumni, students, and administrators to log in with different levels of access and permissions.

Why This Feature Is Needed

• Secure access control is fundamental for any portal handling personal and community data.
• Different user groups (alumni, students, admins) need distinct access rights and functionality.
• Without authentication, the portal cannot be scaled to production use.

Proposed Solution

• Implement a user authentication system (e.g., JWT-based or session-based login).
• Add role-based access control (RBAC) with permissions defined for each role.
• Store user credentials securely (password hashing, salted).

Expected Outcome

• Secure login and signup workflows.
• Role-specific dashboards.
• Improved trust and usability of the portal.

Hi, I would like this task to be assigned to me as i have prior experience in building authentication.