Create inside out Croissant JSON file by hand

[pdurbin]

By hand, we should create a inside out Croissant JSON file.

Once we're happy with it, we can move on to having Dataverse create it for us, which is this issue:

• Explore inside out Croissant (add feature to Dataverse) #12124

[cmbz]

2026-03-02: Here is an example of a hand-coded JSON file for discussion.