Add balanced strategies for device_map in from_pretrained (#18349)
* Add balanced strategies for device_map in from_pretrained
* Add safeguards for Accelerate version
* Update src/transformers/modeling_utils.py
Co-authored-by: Lysandre Debut <lysandre.debut@reseau.eseo.fr>
* Style
Co-authored-by: Lysandre Debut <lysandre.debut@reseau.eseo.fr>