[PWGDQ] initial version of matching QA task

The matching QA task is used to characterize the matching performances:
- matching efficiencies and purities
- analysis of candidates ranking
- matching score distributions

It also provides an interface for running chi2-based and ML-based matching
algorithms on the AO2D tracks.

Author: aferrero2707

PWGDQ/Tasks/CMakeLists.txt

@@ -128,3 +128,8 @@ o2physics_add_dpl_workflow(tag-and-probe
                     SOURCES TagAndProbe.cxx
                     PUBLIC_LINK_LIBRARIES O2::Framework O2::DetectorsBase O2Physics::AnalysisCore O2Physics::AnalysisCCDB O2Physics::PWGDQCore
                     COMPONENT_NAME Analysis)
+
+o2physics_add_dpl_workflow(qa-matching
+                    SOURCES qaMatching.cxx
+                    PUBLIC_LINK_LIBRARIES O2::Framework O2Physics::AnalysisCore O2Physics::PWGDQCore
+                    COMPONENT_NAME Analysis)