Add model checkpointing to push_to_hub and PushToHubCallback (#14492)
* Add checkpointing to push_to_hub and PushToHubCallback
* Add checkpoint loading
* Add missing default value
* Correct method name
* make style
* Moving everything to the right location
* make style
* Revert changes to file_utils.py
* Update src/transformers/keras_callbacks.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* Update src/transformers/keras_callbacks.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* Adding docstrings and comments to clarify code
* make style
* Fix organization positional arg
* Fix load_repo_checkpoint to no longer accidentally create empty repos
* make style
* Remove unnecessary 'organization' argument in load_repo_checkpoint
* Avoid private `_create_or_get_repo` method
* make style
* Update src/transformers/modeling_tf_utils.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>