LPS-49805 Automatic reference importing

Hey Brian,

I've been working on the automatic reference importing in the different staged model data handlers. This change will allow the developers to omit the explicit calls always, which is basically mirrored in every SMDH. This change helps the developers maintaining their components' respective SMDHs. This is part of the making the SMDH leaner progress we have been making.

I've currently applied the changes for the Asset related SMDH and for some others caused test failures due to special logic. I'm going to send the different component changes in separate pulls so I can cc the owner on it.

The change was reviewed by @danielkocsis

Thanks,

Máté