HGTD GeoModelXML package
This MR adds the preliminary source code for the GeoModelXML implementation of the HGTD. The configuration is not yet modified, with improvements to HGTD GMX to be made in follow-up MRs.
This MR adds the preliminary source code for the GeoModelXML implementation of the HGTD. The configuration is not yet modified, with improvements to HGTD GMX to be made in follow-up MRs.