Show Annotations in the viewer for MBD use

[CEngineering]

Model-Based Definition (MBD) is a technique to include manufacturing and design information in a 3D-model instead of using traditional 2D-technical drawings for a paperless manufacturing.

Show the annotations that are in for example an STEP AP242 in the viewer

[digitalbirth]

This website has a step242 example file for download

https://www.mlc-cad.com/publishing-model-based-documentation-file-types-examples/

I believe @kovacsv wrote the library kovacsv/occt-import-js so maybe best to add this issue there

This would be a great addition though 👌