Multi adaptive vertex fitter

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

Core/include/Acts/Vertexing/KalmanVertexTrackUpdator.hpp

@@ -8,6 +8,7 @@
 
 #pragma once
 
+#include "Acts/Vertexing/KalmanVertexUpdator.hpp"
 #include "Acts/Vertexing/TrackAtVertex.hpp"
 #include "Acts/Vertexing/Vertex.hpp"
 
@@ -36,13 +37,17 @@ public:
 
     /// Max track weight
     double maxWeight;
+
+    /// Kalman vertex updator
+    KalmanVertexUpdator<input_track_t> vtx_updator;
   };
 
   /// Constructor
   KalmanVertexTrackUpdator(const Config& config = Config()) : m_cfg(config) {}
 
   void
-  update(TrackAtVertex<input_track_t>& track,
+  update(const GeometryContext&        gctx,
+         TrackAtVertex<input_track_t>& track,
          const Vertex<input_track_t>&  vtx) const;
 
 private: