Move Language/Project name to Mixin::Named

[CarsonF]

This makes it easy to grab a name from a polymorphic query.
I'm hoping we can rework user to also use this. Producibles & Files can also use this.

select Resource {
  id,
  [is Mixin::Named].name
}

I think this will come in handy for Search as well.

Also added some constraints for a trimmed string, so "Foo " becomes "Foo" and " " becomes null & constraint error.
It's as a function so we could choose to apply it to more places.

┆Issue is synchronized with this Monday item by Unito

[bryanjnelson]

🚀