Add evaluation results module (#3633)
* support new eval results format
* define a new module for eval results?
* update docs
* refactor and add HfApi.get_eval_results()
* fix
* docs
* comments
* docstrings
* Update src/huggingface_hub/_eval_results.py
Co-authored-by: Julien Chaumond <julien@huggingface.co>
* no need for get_eval_results
* address comments and add eval_results property to ModelInfo
* update list_models and model_info expand param
* fix
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Co-authored-by: Julien Chaumond <julien@huggingface.co>
