Fix SAM ONNX export requirements with transformers 4.32, export vision encoder separately (#1301)
* support separate sam vision encoder
* style
* add test
* Update optimum/exporters/onnx/__main__.py
Co-authored-by: Michael Benayoun <mickbenayoun@gmail.com>
* update on review
* Update optimum/exporters/onnx/base.py
Co-authored-by: Michael Benayoun <mickbenayoun@gmail.com>
* update docstring
* nit
* fix
* fix test
* fix merge mess
* fix
* rename prompt encoder - mask decoder
* unwanted change
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Co-authored-by: Michael Benayoun <mickbenayoun@gmail.com>