Add "Sites I've developed" to profiles and "Other sites by this dev" to Showcase nodes

[bugfolder]

Per Zulip discussion: https://backdrop.zulipchat.com/#narrow/stream/218635-Backdrop/topic/New.20site.20launched/near/406611268

It would be nice to add "Sites I've developed" as a field to user profiles. And then, on Showcase nodes, to display those as "Other sites by this developer" using that relationship.

A concern is how to prevent random spammers from creating their desired backlinks in their own profile. One possible solution would be to require that a developer must have created and had approved a Showcase node before this information would be displayed (or perhaps, even collected in the profile?).

[olafgrabienski]

Nice idea! Re the spam concern, I'm wondering if "Other sites by this developer" in Showcase nodes can't be implemented without a specific user profile field. Would an approach like "display other Showcase nodes from the same user account" do the job?

[bugfolder]

Would an approach like "display other Showcase nodes from the same user account" do the job?

That would definitely be easy to implement.

I could imagine that a developer might want to link to some of their B sites but not go to the trouble of putting together a Showcase for them all. And perhaps a developer who does multi-CMS development might want to show their WP or D* sites on their profile in addition to their B sites, but of course those wouldn't be in our Showcase. (We would hope, of course, that the proportion of B links would increase over time!)