Add parameters of aws opensearch, support hnsw engine options, support multi-client load data

[norrishuang]

1. Add aws opensearch parameters of hnsw engine options, space type options.
2. Add multi-client load data for aws opensearch.
3. Support set FP16 for faiss engine.
4. Add parameters of shards/replicas/indexing clients/hnsw engine options in UI.

command example

vectordbbench awsopensearch --db-label aos --task-label task-001 \  
--m 16 --ef-construction 256 --ef-search 200 \
--host <aos-host> --port 443 \
--user admin --password '<password>' \
--case-type Performance768D10M \
--number-of-shards 9  \
--number-of-replicas 1 \
--number-of-indexing-clients 10 \
--engine faiss --metric-type ip \
--no-faiss-use-fp16 \
--load --drop-old --num-concurrency 100

and from UI

result log
result_20250521_ef-search-100_opensearch.json

[alwayslove2013]

@norrishuang Thank you very much for your so detailed PR. I believe it will help the community test OpenSearch more effectively, and I will review it as soon as possible.

[navneet1v]

@norrishuang similar PR: https://github.com/zilliztech/VectorDBBench/pull/529/files with fixes and removal nmslib engine since it is deprecated.

[navneet1v]

cosine is supported with 2.19 and above version of Opensearch with faiss. I think this check can be removed

[norrishuang]

Thanks @navneet1v , I removed it.

[alwayslove2013]

How about removing one of efSearch or ef_search?

[norrishuang]

removed efSearch in commit recover some code format

[alwayslove2013]

@norrishuang There is an issue with the format.
Hope it helps.

pip install ruff --upgrade
pip install black --upgrade
make format
make lint

[norrishuang]

fixed format issue. recover some code format

[alwayslove2013]

@norrishuang some little conflicts with pr: #529 , could you please help resolve it~

[norrishuang]

@norrishuang some little conflicts with pr: #529 , could you please help resolve it~

The conflicts was resolved.

[sre-ci-robot]

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[alwayslove2013]

@norrishuang still seems to conflict with main.

[norrishuang]

@norrishuang still seems to conflict with main.

compare the code of conflicts, there are some code format issues, it's resolved.