Enhance user plan management and update related endpoints

- 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.

frontend/src/routes/admin/support.tsx

@@ -10,7 +10,7 @@ import { AdminTicketDetailDialog } from '@/features/admin/support/AdminTicketDet
 import { listAllTickets } from '@/features/admin/support/api'
 import type { TicketStatus, TicketType } from '@/shared/api/types'
 
-const TYPES: TicketType[] = ['BugReport', 'RoleRequest', 'ExtensionRequest']
+const TYPES: TicketType[] = ['BugReport', 'ExtensionRequest']
 const STATUSES: TicketStatus[] = ['Open', 'Resolved', 'Closed']
 
 export const Route = createFileRoute('/admin/support')({