Packaging: Support directory structure
ml_model package type does not support directories. However, models artifacts often have a file structure, and tooling used to generate the packages not always allow the package structure to be changed.
As an existing solution, the maven repository does support this through a side table (https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/services/packages/maven/find_or_create_package_service.rb#L4-4)
Edited by Eduardo Bonet