[`core`] Add Quantization support for `dispatch_model` (#1237)
* add quantization support for `dispatch_model`
* fix multi-gpu
* more chaecks
* fix bias issue
* Update src/accelerate/utils/modeling.py
Co-authored-by: Andrei Panferov <andrei@BlackSamorez.ru>
* make style
* add tests
* left some todos
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Co-authored-by: Andrei Panferov <andrei@BlackSamorez.ru>