[WIP] upgrade faiss to 1.14.1

[alexanderguzhva]

• Upgrade faiss to 1.14.1+, commit so far is d8c1a9785f21c84e7517226f6d7f84bfbfd
• deprecate enable_bf16_patch logic
• get rid of the forked IndexPQ, ProductQuantizer
• in process of merging dynamic dispatching mechanisms

Contains #1496
Contains facebookresearch/faiss#4894

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alexanderguzhva

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [alexanderguzhva]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[mergify]

@alexanderguzhva 🔍 Important: PR Classification Needed!

For efficient project management and a seamless review process, it's essential to classify your PR correctly. Here's how:

1. If you're fixing a bug, label it as kind/bug.
2. For small tweaks (less than 20 lines without altering any functionality), please use kind/improvement.
3. Significant changes that don't modify existing functionalities should be tagged as kind/enhancement.
4. Adjusting APIs or changing functionality? Go with kind/feature.

For any PR outside the kind/improvement category, ensure you link to the associated issue using the format: “issue: #”.

Thanks for your efforts and contribution to the community!.