Add support for Perceiver ONNX export (#17213)
* Start adding perceiver support for ONNX
* Fix pad token bug for fast tokenizers
* Fix formatting
* Make get_preprocesor more opinionated (processor priority, otherwise tokenizer/feature extractor)
* Clean docs format
* Minor cleanup following @sgugger's comments
* Fix typo in docs
* Fix another docs typo
* Fix one more typo in docs
* Update src/transformers/onnx/utils.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* Update src/transformers/onnx/utils.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* Update src/transformers/onnx/utils.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
