feat: Implement Pinecone vector store integration

- Update config.py with Pinecone settings and model configurations
- Implement VectorStore class with Pinecone backend
- Add comprehensive vector operations (add, search, delete)
- Set up proper error handling and metadata management
- Add .gitignore for Python project

requirements.txt

@@ -0,0 +1,9 @@
+torch>=2.0.0
+transformers>=4.30.0
+datasets>=2.12.0
+accelerate>=0.20.0
+peft>=0.4.0
+bitsandbytes>=0.40.0
+scipy>=1.10.0
+numpy>=1.24.0
+tqdm>=4.65.0