Add telegram_communication app with dedicated DB routing

- Register TelegramCommunicationConfig in INSTALLED_APPS and add telegram_db to DATABASES
- Define TelegramData model mapped to the messages table
- Fix allow_migrate in ProjectDatabaseRouter: redirect and telegram entries were returning the DB name string (always truthy) instead of a boolean comparison, causing their migrations to bleed into every database
- Add telegram routing to db_for_read, db_for_write, allow_relation, and allow_migrate

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

django_code/apps/telegram_communication/apps.py

@@ -3,4 +3,5 @@ from django.apps import AppConfig
 
 class TelegramCommunicationConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
-    name = 'telegram_communication'
+    name = 'apps.telegram_communication'
+    label = 'telegram'