Missing a key parameter in Chroma class to control the behavior of HNSW algo

[newBlanco]

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Feature request

In Chromadb, you can control the behavior of HNSW algorithm by parameter "hnsw:search_ef", which controls the number of neighbours in the HNSW graph to explore when adding new vectors, but in the codes of creating Chroma instances I don't find way to set this parameter

Motivation

After I had completed the vector database codes using Chroma support, I noticed there was no way to tune the parameter to control the HNSW algo of the database, which made the HNSW searching process to be default and could not provide more flexibility. I think this should be added.

Proposal (If applicable)

No response