Specialized kwarg processing for datasets in task models

[jgoodson]

https://github.com/FIRE-CB/TraGeC/blob/b3d76d925d0646bb2fa2c509839ab58affea4f8d/tragec/tasks/tasks.py#L112-L120

Some specialized datasets enable configuration at runtime through keyword arguments. Since datasets are contructed via task models, this function should be able to properly handle arbitrary keyword arguments for datasets as long as they are enabled in the training interface.