🛠️ Refactor Authentication

Description

The current authentication implementation in the UserOrg component needs to be refactored to align with modern best practices in .NET Identity. This includes:

1. Migration to JWT-based Authentication
   Replace the existing authentication mechanism with a secure and scalable JWT token-based approach using .NET Identity.
2. RBAC Matrix Refactor
   Rework the current Role-Based Access Control (RBAC) matrix implementation to leverage .NET Identity policies. This will improve maintainability, scalability, and integration with ASP.NET Core's built-in authorization system.

Goals

• Improve security and maintainability of the authentication flow.
• Simplify role and permission management using policy-based authorization.

Tasks

• Implement JWT token validation.
• Integrate JWT authentication with .NET Identity.
• Refactor RBAC matrix to use IAuthorizationPolicyProvider and custom policies.
• Update UserOrg component to use the new authentication and authorization logic.
• Add unit and integration tests for the new authentication flow.

References

• [.NET Identity Documentation](https://learn.microsoft.com/en-us/aspnet/core/security/authentication/?view=aspnet/security/authentication/jwt-authnrity/authorization/policies?view=