- Added new configuration options for user plans in `.env.example`, including `Plans__MaxCustomConfigCount` and `Plans__MinCustomConfigCount`.
- Introduced `MapPlanEndpoints` in `Program.cs` to handle plan-related API routes.
- Implemented `SetUserPlan` endpoint in `RoleEndpoints` to allow admins to assign plans to users.
- Removed deprecated role request approval endpoints from `AdminSupportEndpoints`.
- Updated `ITelegramNotifier` and related classes to reflect changes in role request handling and payment notifications.
- Refactored role management commands to remove `MaxConfigs` and focus on `MaxIpLimit` and billing settings.
- Enhanced billing request handling to accommodate plan changes instead of role changes.
- Updated various interfaces and command handlers to support new plan management features.
- Updated `ListPaymentRequestsQuery` to include `Kind` and `Search` parameters for better filtering of payment requests.
- Enhanced `ListAuditLogsQuery` to support additional filters: `Source`, `TargetType`, and `Action`, improving audit log retrieval.
- Modified `ListUsersQuery` to accept new filters: `RoleId`, `IsActivated`, `IsBlocked`, and `BillingExpired`, allowing for more granular user management.
- Introduced `DeleteInbound` endpoint to allow deletion of inbounds that are not currently available, enhancing inbound management capabilities.
- Updated frontend API calls to reflect new query parameters and support for additional filtering options in the admin interface.
- Revised API documentation to include new parameters and endpoint functionalities for better clarity and usage guidance.