Milestone: SACRO RO-Crate integration demonstrator

[elichad]

Idea being fleshed out in https://docs.google.com/document/d/1Hyq853JYlM4ywu9y1vlt_d6oYvNj5gby3zR8dUYm_CA/edit?tab=t.0.

I set an end date so it'll appear on the project board - it can be changed

[elichad]

First task is to check SACRO output RO-Crates - to see if this is feasible. Check how well they conform to existing 5s-ROC profile & if changes are needed