Multi adaptive vertex fitter

Implements the multi adaptive vertex fitter and all related required tools.

Core/include/Acts/Vertexing/VertexFinderTools/IterativeVertexFinder.hpp

@@ -59,7 +59,7 @@ public:
     /// Propagator
     Propagator_t propagator;
 
-    debugMode = false;
+    bool debugMode = false;
 
     /// Vertex finder configuration variables
     bool   useBeamConstraint           = false;