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.

docker-compose.yml

@@ -30,10 +30,13 @@ services:
       ASPNETCORE_ENVIRONMENT: Production
       ASPNETCORE_HTTP_PORTS: '8085'
       ConnectionStrings__Default: 'Host=db;Port=5432;Database=${POSTGRES_DB:-pnvpanel};Username=${POSTGRES_USER:-pnvpanel};Password=${POSTGRES_PASSWORD:-pnvpanel}'
+      FileStorage__RootPath: '/app/uploads'
     volumes:
       # Data Protection key-ring (шифрование секретов нод at-rest) должен пережить пересоздание
       # контейнера — иначе расшифровка паролей нод после рестарта станет невозможна.
       - dp_keys:/app/keys
+      # Вложения тикетов поддержки (скриншоты) — обычные файлы на диске, см. DiskFileStorage.
+      - ticket_uploads:/app/uploads
     healthcheck:
       test: ['CMD', 'curl', '-f', 'http://localhost:8085/health']
       interval: 15s
@@ -47,3 +50,4 @@ services:
 volumes:
   pgdata:
   dp_keys:
+  ticket_uploads: