Qdrant similarity search guide (#389)

* Similarity search using Gemini embeddings and Qdrant

* Rename file

* Add buttons

* nbfmt rename

* Update Qdrant_similarity_search.ipynb

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Co-authored-by: nidhinpd <nidhin.devan@ymedialabs.com>
Co-authored-by: Mark Daoust <markdaoust@google.com>