Interoperability with langchain-extract

## About
`langchain-extract` is a simple web server that allows you to extract information from text and files using LLMs. It is build using [FastAPI](https://fastapi.tiangolo.com/), [LangChain](https://python.langchain.com/) and [PostgreSQL](https://www.postgresql.org/).

## Resources
- https://extract.langchain.com/
- https://github.com/langchain-ai/langchain-extract
