adding rag with vector store and open source model

[RichmondAlake]

Build a RAG System with a vector database and open source models

• Implementing an end-to-end RAG system
• Using Open models for base and embedding model
• Using MongoDB as the Vector Store

@MKhalusova

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[MKhalusova]

Great notebook! I left a couple of comments in the notebook, and there are a few more things left to do:

• Add the notebook to the _toctree.yml, feel free to place it on top, right after the index page.
• Add the notebook to the list of the latest notebooks in the index.md. Same here - put it at the top of the list.

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[MKhalusova]

Looks good to me! I'll merge today, but will communicate tomorrow.

[RichmondAlake]

Looks good to me! I'll merge today, but will communicate tomorrow.

Thanks, @MKhalusova, and feel free to tag me on any posts made for redistribution.