TGC_Digitization → MuonIdHelpers Relation

File in MuonSpectrometer/MuonDigitization/TGC_Digitization	Includes file in MuonSpectrometer/MuonIdHelpers
src / TgcDigitizationTool.cxx	MuonIdHelpers / TgcIdHelper.h
src / TgcDigitMaker.cxx	MuonIdHelpers / TgcIdHelper.h