QoL: allow using remapped names for injected interface targets

[Syst3ms]

Opening an issue so this gets tracked. Purely QoL, but getting intermediary names for every target class is rather annoying.

[SpaceWalkerRS]

Weren't there plans/ideas to move injected interfaces out of the mod.json (similar to access wideners)? That would make it easier for Loom to remap them for prod builds.