Add CollectionOfFake overload that accepts an action that uses fake number to configure fake

Split from #1837, as proposed by @PiotrKlecha, whose compelling example was

A new overload for A.CollectionOfFake could also simplify assigning a unique name to each Fake:

var fakes = A.CollectionOfFake<IInterface>(3, (o, i) => o.Named($"Fake{i}"));

[PiotrKlecha]

@blairconrad This looks simple enough, so I guess I could give it a try.

[blairconrad]

Thanks, @PiotrKlecha! Look for your name in the release notes! 🥈