Imported and sorted materials from LHCb GDML export
!294 (closed) tried to import and sort materials from LHCb GDML export. They were an attempt to compare/reconcile the materials that came by default in DD4hep with what we had in DetDesc. However after the refactor work, many changes in xml are no longer in use, the most useful were the python scripts introduced by this merge request, after discussing with Ben, we deceided to close it, as long as we remember to check the base materials, as that is done somewhere else