[Backport 2.x] Introduces NativeEngineKNNQuery which executes ANN on rewrite (#1877)

[shatejas]

Signed-off-by: Tejas Shah shatejas@amazon.com (cherry picked from commit df7627c6e580843beb2361f5c2ec3519efd52280)

Description

Backport PR

• https://github.com/opensearch-project/k-NN/pull/1877

Related Issues

Resolves #[Issue number to be closed when this PR is merged]

Check List

• [ ] New functionality includes testing.
• [ ] New functionality has been documented.
• [ ] API changes companion pull request created.
• [ ] Commits are signed per the DCO using --signoff.
• [ ] Public documentation issue/PR created.

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