move Identifier from Utilities to Detector

Detector/Identifier/CMakeLists.txt

+################################################################################
+# Package: Identifier
+################################################################################
+
+gaudi_add_header_only_library(Identifier)
+
+install(TARGETS Identifier
+  EXPORT CEPCSWTargets
+  RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}" COMPONENT bin
+  LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}" COMPONENT shlib
+  COMPONENT dev)

Utilities/DataHelper/CMakeLists.txt

@@ -20,6 +20,7 @@ gaudi_add_library(DataHelperLib
                        EDM4HEP::edm4hepDict
                        ${GSL_LIBRARIES}
                        ${CLHEP_LIBRARIES}
+		       Identifier
 )
 
 install(TARGETS DataHelperLib