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.Api/Telegram/PnvBotUpdateHandler.cs

@@ -1,5 +1,6 @@
 using Microsoft.Extensions.Options;
 using PnvPanel.Application.Admin.Activation;
+using PnvPanel.Application.Admin.Support;
 using PnvPanel.Application.Common.Interfaces;
 using PnvPanel.Application.Common.Messaging;
 using PnvPanel.Application.Configs.GetConfigLink;
@@ -222,6 +223,29 @@ public sealed class PnvBotUpdateHandler(
 
                 break;
             }
+            case "rrq":
+            {
+                if (!await TrySetAdminCurrentUserAsync(services, fromId, cancellationToken))
+                {
+                    await botClient.AnswerCallbackQuery(callback.Id, "Недостаточно прав.", cancellationToken: cancellationToken);
+                    return;
+                }
+
+                var result = parts[1] == "approve"
+                    ? await sender.Send(new ApproveRoleRequestCommand(requestId), cancellationToken)
+                    : await sender.Send(new RejectRoleRequestCommand(requestId, Reason: null), cancellationToken);
+
+                await botClient.AnswerCallbackQuery(callback.Id, result.IsSuccess ? "Готово" : result.Error.Message, cancellationToken: cancellationToken);
+                if (result.IsSuccess && callback.Message is not null)
+                {
+                    var statusText = parts[1] == "approve" ? "✅ Заявка одобрена, роль выдана." : "❌ Заявка отклонена.";
+                    var text = $"{Escape(callback.Message.Text ?? "")}\n\n{statusText}";
+                    await botClient.EditMessageText(
+                        chatId.Value, callback.Message.Id, text, parseMode: ParseMode.Html, cancellationToken: cancellationToken);
+                }
+
+                break;
+            }
             case "cfg":
             {
                 if (!await TrySetCurrentUserAsync(services, fromId, cancellationToken))