Is your feature request related to a problem? Please describe.
It is currently not possible to load the multi material painting form 3mf files created with Slic3r based software (Prusa Slicer, Bambu Studio and others).
Describe the solution you'd like
Color the painted triangles and possible split them accordeing to the "slic3rpe:mmu_segmentation"
or "paint_color" attriput.
Describe alternatives you've considered
Use a different app to preprocess the file.
Additional context
This was originally planned to be included in #10 but was moved to its own issue.