Add clip resources to the transformers documentation
# What does this PR do?


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Fixes #20055 (partially)


## Before submitting
- [x] This PR improves the docs of CLIP by adding common and most used resources
- [x] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#start-contributing-pull-requests),
      Pull Request section?
- [x] 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. #20055 
- [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).

## Who can review?

@stevhliu Please can you have a look?

The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/transformers/pr_20190). All of your documentation changes will be reflected on that endpoint.<|||||>The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/transformers/pr_20190). All of your documentation changes will be reflected on that endpoint.<|||||>Folks, please make sure resources which are added are talking about the particular model.

