[Trigger,PWGEM] add global dimuon trigger under PWGEM (#14440)

Author: dsekihat

EventFiltering/CMakeLists.txt

@@ -82,6 +82,11 @@ o2physics_add_dpl_workflow(mult-filter
     PUBLIC_LINK_LIBRARIES O2Physics::AnalysisCore
     COMPONENT_NAME Analysis)
 
+o2physics_add_dpl_workflow(em-global-dimuon-filter
+    SOURCES PWGEM/globalDimuonFilter.cxx
+    PUBLIC_LINK_LIBRARIES O2Physics::AnalysisCore O2::GlobalTracking
+    COMPONENT_NAME Analysis)
+
 o2physics_add_dpl_workflow(em-photon-filter
     SOURCES PWGEM/EMPhotonFilter.cxx
     PUBLIC_LINK_LIBRARIES O2Physics::AnalysisCore O2::DetectorsBase O2Physics::PWGEMPhotonMesonCore