Implement support ticket system with role request and bug report functionalities

- Introduced a new support ticket system allowing users to submit bug reports and role requests.
- Implemented endpoints for creating, updating, and managing support tickets, including file attachments.
- Enhanced Telegram bot integration to handle role requests directly within the bot, enabling admins to approve or reject requests without accessing the website.
- Updated database schema to include support ticket entities and their relationships.
- Improved API documentation to reflect new support ticket endpoints and their usage.
- Added necessary localization for support ticket features in both Russian and English.

backend/src/PnvPanel.Application/Common/Interfaces/ITelegramNotifier.cs

@@ -12,4 +12,12 @@ public interface ITelegramNotifier
 
     /// <summary>Личное сообщение пользователю, если у него привязан Telegram (иначе no-op).</summary>
     Task NotifyUserAsync(Guid userId, string message, CancellationToken cancellationToken);
+
+    /// <summary>Баг-репорт/предложение — только кнопка-ссылка на сайт (переписка и картинки — там),
+    /// без инлайн-действий.</summary>
+    Task NotifyAdminsBugReportCreatedAsync(Guid ticketId, string userName, string message, CancellationToken cancellationToken);
+
+    /// <summary>Заявка на роль — инлайн-кнопки «Одобрить/Отклонить», решается полностью в Telegram.</summary>
+    Task NotifyAdminsRoleRequestCreatedAsync(
+        Guid ticketId, string userName, string roleDescription, string justification, CancellationToken cancellationToken);
 }