HGTD_FastDigitization → HGTD_DetDescr Relation

File in HighGranularityTimingDetector/HGTD_Digitization/HGTD_FastDigitization	Includes file in HighGranularityTimingDetector/HGTD_DetDescr
src / HGTD_SmearedDigitizationTool.cxx	HGTD_Identifier / HGTD_Identifier / HGTD_ID.h
src / HGTD_SmearedDigitizationTool.cxx	HGTD_ReadoutGeometry / HGTD_ReadoutGeometry / HGTD_DetectorManager.h