- Added EmailBlacklist service and controller for managing blacklisted emails.
- Created EmailBlacklistDto for data transfer and EmailBlacklistFormViewModel for form handling.
- Implemented views for listing and adding emails to the blacklist.
- Updated database schema with new EmailBlacklist entity and related migrations.
- Enhanced OAuthClientFormViewModel to include ClientId and ClientSecret properties.
- Added EmailBlacklistService to handle email blacklisting logic.
- Integrated email blacklist service into the application with necessary dependencies.
