Safetensors tf (#19900)
* Wip
* Add safetensors support for TensorFlow
* First tests
* Add final test for now
* Retrigger CI like this
* Update src/transformers/modeling_tf_utils.py
Co-authored-by: Lysandre Debut <lysandre.debut@reseau.eseo.fr>
Co-authored-by: Lysandre Debut <lysandre.debut@reseau.eseo.fr>