Add requirements.txt

requirements.txt

@@ -0,0 +1,8 @@
+langchain==0.2.0
+langchain_text_splitters==0.2.0
+langchain_chroma==0.1.0
+langchain_ollama==0.1.0
+chromadb==0.4.21
+fastapi==0.111.0
+uvicorn==0.30.1
+pydantic==2.8.2