Convnext flax
# Flax Implementation of `facebook/convnext-tiny-224`

## Before submitting
- [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
- [x] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests),
      Pull Request section?
- [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link
      to it if that's the case.
- [x] Did you make sure to update the documentation with your changes? Here are the
      [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and
      [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation).
- [x] Did you write any new necessary tests?


## Who can review?

Flax: @sanchit-gandhi

## TODO

Last Updated : 10 Feb, 2023

- [x] Fixing tests failed in `ci/circleci: tests_flax` actions.   
- [ ] Uploading [Shubhamai/convnext-tiny-224](https://huggingface.co/Shubhamai/convnext-tiny-224) flax weights to [facebook/convnext-tiny-224](https://huggingface.co/facebook/convnext-tiny-224).
- [x] Depends on merge of [_Improve flax test_attention_outputs_ PR](https://github.com/huggingface/transformers/pull/21486) to pass (or technically skip) `test_attention_outputs` test.

The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/transformers/pr_21485). All of your documentation changes will be reflected on that endpoint.<|||||>@sanchit-gandhi this PR is also ready for your review in case it was missed. And again, thank you so much for taking the time to review the PR.<|||||>@sanchit-gandhi Reminder incase my previous message got missed! Also the https://github.com/huggingface/transformers/pull/21472 ( previous reviews implemented ) and https://github.com/huggingface/transformers/pull/21867 PR are awaiting review. Thanks!<|||||>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/main/CONTRIBUTING.md) are likely to be ignored.