[WIP][Flax] Add general conversion script (#10809)
* save intermediate
* finish first version
* delete some more
* improve import
* fix roberta
* Update src/transformers/modeling_flax_pytorch_utils.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* Update src/transformers/modeling_flax_pytorch_utils.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* small corrections
* apply all comments
* fix deterministic
* make fix-copies
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
