Add Multimodal Video RAG example (#10530)

* bug fix

* bug fixed and updated example

* make builds done, committing minor changes

* key removal

* removed unwanted args

* bug fix,examples added

* remove secrets

* revert original example

* cr changes

* multimodal recipe code

* formating

* video rag example

* formatting

* updated docs

docs/community/integrations/vector_stores.md

@@ -31,6 +31,7 @@ as the storage backend for `VectorStoreIndex`.
 - Neo4j (`Neo4jVectorIndex`). [Installation](https://neo4j.com/docs/operations-manual/current/installation/).
 - Pinecone (`PineconeVectorStore`). [Installation/Quickstart](https://docs.pinecone.io/docs/quickstart).
 - Qdrant (`QdrantVectorStore`) [Installation](https://qdrant.tech/documentation/install/) [Python Client](https://qdrant.tech/documentation/install/#python-client)
+- LanceDB (`LanceDBVectorStore`) [Installation/Quickstart](https://lancedb.github.io/lancedb/basic/)
 - Redis (`RedisVectorStore`). [Installation](https://redis.io/docs/getting-started/installation/).
 - Supabase (`SupabaseVectorStore`). [Quickstart](https://supabase.github.io/vecs/api/).
 - TimeScale (`TimescaleVectorStore`). [Installation](https://github.com/timescale/python-vector).