langchain

158dda44 - Added notebook tutorial on using Yellowbrick as a vector store with LangChain (#14509)

Added notebook tutorial on using Yellowbrick as a vector store with LangChain (#14509) - **Description:** a notebook documenting Yellowbrick as a vector store usage --------- Co-authored-by: markcusack <markcusack@markcusacksmac.lan> Co-authored-by: markcusack <markcusack@Mark-Cusack-sMac.local>