[feat] python module to validate the tune config fields.

[alessiovignoli]

The keys inside the tune_config.yaml should be validated. nf-schema does exactly this. Here is a list of things it should do:

• [ ] check that mandatory keywords are present and of the allowed type.
• [ ] default optional keys to default values.
• [ ] check if optional keys are present if not add them and default them.
• [ ] check that harmful keys are not given. list of harmful keys:

1. ["tune"]["run_params"]["name"]
2. ["tune"]["run_params"]["checkpoint_config"]
3. ["tune"]["run_params"]["storage_path"]

related issues:

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[alessiovignoli]

usefull documentation on appliyng schema to a given file -> here