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.

config/settings.py

@@ -20,6 +20,7 @@ INSTALLED_APPS = [
     "django.contrib.staticfiles",
     "rest_framework",
     "corsheaders",
+    "rag",
     "tasks",
     "soil_data",
     "sensor_data",