[OpenVINO] Changes to Support NNCF in OpenVINO Executorch-Optimum Integration

[anzr299]

Summary

Changes in NNCF compression function housed in Executorch to support OpenVINO integration to Optimum-Executorch

[pytorch-bot]

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⚠️ 9 Awaiting Approval

As of commit 3717592 with merge base 10f22a7 ():

AWAITING APPROVAL - The following workflows need approval before CI can run:

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• Test Metal Backend (gh)

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