Add support to Sonador 3D to creating multi-layer segmentation files without artifact or data encoding issues

Current state-of-the-art encoding of DICOM-SEG from highdicom using Sonador3D produces artifacts or "mirrored" volumes in volumes acquired sagitally from left/right in a subset of patients. DICOM-SEG files produced by 3D Slicer do not have this artifact.

Development tasks:

• Determine why it is not possible to write DICOM-SEG files consistently from highdicom. Patch and fix.
• Create a high-level interface that can be used by 95% of segmentation use cases which take a 3D volume and a labelmask and output a new segmentation series.