Add Qdrant and ChromaDB support to the project

- Added Qdrant service to both docker-compose files for production and development.
- Updated environment variables in .env.example and settings.py to include Qdrant configuration.
- Included necessary dependencies for Qdrant and ChromaDB in requirements.txt.
- Updated .gitignore to exclude ChromaDB data files.

rag/apps.py

@@ -0,0 +1,7 @@
+from django.apps import AppConfig
+
+
+class RagConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "rag"
+    verbose_name = "RAG - پایگاه دانش"