dagmc_h5m_file_inspector updates

[shimwell]

After 4 good years the dagmc_h5m_file_inspector Python package has been refactored and modernized.

It is now fully capable using a h5py backend. While the pymoab backend remains an option and useful for testing the h5py backend is now default. This has a number of advantages:

• Fully distributed via pypi and installable with pip
• Faster than before
• Able to write modern file formats like vtkhdf
• Minimal dependencies
  • Quicker easier install with less change of package conflicts
  • No additional dependencies to OpenMC

The package has slightly extended its remit:

• Find volume ids in a dagmc h5m file
• Find material tags in a dagmc h5m file
• Find both volume and material ids (linked) in a dagmc h5m file
• Get the bounding box of the dagmc geometry
• Get the volumes (in cm3) of the material tags within the dagmc file
• Set openmc material volumes according to their names
• Get triangle connectivity and coordinates for each volume
• Convert the dagmc h5m file to a vtkhdf (with cell and material coloring), open in Paraview