[Backport 2.x] Add a FAISS_OPT_LEVEL=avx512_spr build mode.#2437

naveentatikonda merged 3 commits into2.xopensearch-project/k-NN:2.xfrom

backport/backport-2404-to-2.xopensearch-project/k-NN:backport/backport-2404-to-2.xCopy head branch name to clipboard