Extend workflow tasks for arbitrary raw files, hrefs, etc
There are many cases where users have complicated workflows, where the data/calculation from some steps are not supported in NOMAD. Developing support will be encouraged but takes time. So, it would be nice for them to be able to still make a complete provenance graph for their workflow in NOMAD, while simply pointing to raw files in their upload or adding an href (possibly other options to be thought of).
@ladinesa thoughts?