Add support for `push_to_hub` for `AutoFeatureExtractor`
# 🚀 Feature request

Add support for `push_to_hub` for `AutoFeatureExtractor.save_pretrained()`.

Hey, while doing some Speech tests I noticed that
`AutoFeatureExtractor.save_pretrained()` is not supporting `push_to_hub`.
https://github.com/huggingface/transformers/blob/46efc5802458e91a702528332d76d464061d201f/src/transformers/feature_extraction_utils.py#L194
compared to `AutoTokenizer`
https://github.com/huggingface/transformers/blob/0b8c84e110bf9012f30a85c40b9ff8ea868689fd/src/transformers/tokenization_utils_base.py#L1432



This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

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.<|||||>unstale<|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

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.