Add Mistral 4 (#44760)
* Add Mistral Small 4
* add mistral4 to toctree
* Quality
* Update src/transformers/models/mistral4/__init__.py
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
* wip
* docstring
* Make config dataclass
* Fixes fixes fixes
* update tp plan
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Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
