Speeding up the models inference by OpenVINO through accurate quantization via NNCF
# 🚀 Feature request

Add quantization support via [NNCF ](https://github.com/openvinotoolkit/nncf) for fast inference on OpenVINO

## Motivation

Using NNCF can speed up models up to 4x by INT8 quantization. Look at the results [here](https://github.com/openvinotoolkit/nncf#nlp-huggingface-transformers-powered-models)

## Your contribution

NNCF team already created a patch for your repo that enables this feature. Please, take a look at https://github.com/openvinotoolkit/nncf/tree/develop/third_party_integration/huggingface_transformers

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Please note that issues that do not follow the [contributing guidelines](https://github.com/huggingface/transformers/blob/master/CONTRIBUTING.md) are likely to be ignored.