Prepare Validator Infrastructure for 5 Safes RO-Crate

[douglowe]

Draft 0.5 definition for a 5 Safes RO-Crate: https://trefx.uk/5s-crate/0.5-DRAFT/
Source code for above: https://github.com/trefx/5s-crate/tree/main/0.5-DRAFT

Create a profile for this in the RO-Crate validator.

[douglowe]

We have decided to split the work within this issue across other sub-issues of the Parent issue.

The work in those other issues will be merged into the feature branch created from this issue. Once these have all been merged we can close this issue by merging the work in develop.

[douglowe]

I've merged the PR - after suggestion from Eli that it doesn't make sense to have the feature branch separate to the develop branch for our forked repository. I'm keeping this issue active though, for us to track the other issues as sub-issues.

[douglowe]

And closing it again - as github has now allowed me to transfer the original issue to the correct repository.