- Add OAuthServer for handling OAuth2 flows including authorization, token exchange, and client registration.
- Introduce DatabaseAuthenticator for persisting clients and authorization codes.
- Implement SQL procedures for client registration, code saving, and token introspection.
- Support for external OAuth2 providers and PKCE (Proof Key for Code Exchange).
- Implement BeforeHandle hook to enforce authentication based on model rules.
- Integrate with existing security mechanisms to allow or deny access.
- Update documentation to reflect new hook and its usage.
* Implement TwoFactorAuthenticator for 2FA login.
* Create DatabaseTwoFactorProvider for PostgreSQL integration.
* Add MemoryTwoFactorProvider for in-memory testing.
* Develop TOTPGenerator for generating and validating codes.
* Include tests for all new functionalities.
* Ensure backup codes are securely hashed and validated.
