HGTD_GeoModelXml → HGTD_Identifier Relation

File in HighGranularityTimingDetector/HGTD_DetDescr/HGTD_GeoModelXml	Includes file in HighGranularityTimingDetector/HGTD_DetDescr/HGTD_Identifier
src / HGTD_GmxInterface.cxx	HGTD_Identifier / HGTD_ID.h