Move the quantization API to OSS

[mcremon-meta]

Summary: As titled.

Differential Revision: D58680953

[pytorch-bot[bot]]

:link: Helpful Links

:test_tube: See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/3997

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• inductor_torchbench_perf jobs are broken due to numpy 2.0 update

:white_check_mark: You can merge normally! (1 Unrelated Failure)

As of commit 19fa9ed29f5dfceb46577df719728fe5d41cb98f with merge base bcabc3757bda66c86aea493ea1b59e37351206ad ():

BROKEN TRUNK - The following job failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

* [pull / unittest / macos / macos-job](https://hud.pytorch.org/pr/pytorch/executorch/3997#26329669295) ([gh](https://github.com/pytorch/executorch/actions/runs/9552636391/job/26329669295)) ([trunk failure](https://hud.pytorch.org/pytorch/executorch/commit/bcabc3757bda66c86aea493ea1b59e37351206ad#26258733321)) `##[error]The operation was canceled.`

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This pull request was exported from Phabricator. Differential Revision: D58680953

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This pull request has been merged in pytorch/executorch@d11e8e1f6a7db460081335e5c9573082e5955235.