Saving hyperparams in yaml file for Tensorboard for #521

[Shreyz-max]

This PR saves the hyperparameters in a YAML file for Tensorboard tracker. By default, the HParams dashboard currently requires at least one hparam and at least one metric defined in the hparams configuration but since we have no metric, the hyperparameters will be stored in a YAML file . The changes have been implemented in tracking.py.

[muellerzr]

Thank you for this! I left one comment just to make sure if we want to store it to the current dir or the already existing logging_dir

[HuggingFaceDocBuilderDev]

The documentation is not available anymore as the PR was closed or merged.

[muellerzr]

cc @nateraw if you have any comments 🤗

[nateraw]

Couple comments here - will try to give it a try in an hour to give more detailed feedback if I have any.

[muellerzr]

@Shreyz-max cast run_name to a string on the yaml part and it should solve the error. E.g. str(run_name)

Great work on this, were almost there!

[Shreyz-max]

Yeah, sorry about the mistake. I did not notice this at all.

[Shreyz-max]

I suppose I need to create the folder.

[muellerzr]

Great job! CC @nateraw for one last look, but lg2m!