AdminUI - Add link to create new field directly from custom group listing

[colemanw]

Overview

Adds a convenient link for adding a new field directly from the Custom Groups listing.

Before

Must click into the custom group before adding a field to it.

After

Can add a field directly from the groups listing.

Technical Details

I'm impressed that SearchKit figured out what to do with the cross-entity join in this link!

[civibot]

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[aydun]

Nice!
The UI doesn't quite know how to display it, but it works: