Feature Request/Idea: Create Machine Learning Metadata Block

Overview of the Feature Request
This new metadata block would be optional and would include new metadata fields for describing machine learning research data , such as ML models, tasks, sources, etc.

What kind of user is the feature intended for?
Depositors, curators, administrators managing machine learning datasets and collections. Users can describe the "number of instances", "task type", and other technical details related to machine learning models and programs.

What inspired the request?
This is inspired by Stephanie Labou's research about machine learning datasets in Harvard Dataverse and other repositories around the world. https://zenodo-rdm.web.cern.ch/records/11269191 slide 11 -

What existing behavior do you want changed?
Add new metadata block with standardized fields for describing machine learning data

Any brand new behavior do you want to add to Dataverse?
Add new metadata block with standardized fields for describing machine learning data

Any open or closed issues related to this feature request?

No files, tests, or entry points are identified in the issue. Begin by reviewing the requested standardized fields and the linked research reference, then determine the metadata model and validation scope. Done means an optional machine-learning metadata block supports the agreed fields for depositors, curators, and administrators.