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/features/support/TicketDetailDialog.tsx

@@ -63,18 +63,6 @@ export function TicketDetailDialog({ ticketId, onOpenChange }: { ticketId: strin
 
         {data && (
           <div className="flex max-h-[60vh] flex-col gap-4 overflow-y-auto">
-            {data.type === 'RoleRequest' && (
-              <div className="rounded-md border border-border p-3 text-sm">
-                {data.requestedRoleName
-                  ? t('support.requestedExistingRole', { role: data.requestedRoleName })
-                  : t('support.requestedNewRole', {
-                      name: data.proposedRoleName,
-                      configs: data.proposedMaxConfigs,
-                      ip: data.proposedMaxIpLimit,
-                    })}
-              </div>
-            )}
-
             {data.type === 'ExtensionRequest' && (
               <div className="rounded-md border border-border p-3 text-sm">
                 {t('support.requestedExtension', { days: data.requestedDays })}