WIP: setup DummyFastSimG4Tool

Simulation/DetSimFastModel/src/DummyFastSimG4Tool.cpp

 #include "DummyFastSimG4Tool.h"
+
+#include "G4VFastSimulationModel.hh"
+
+StatusCode DummyFastSimG4Tool::initialize() {
+    StatusCode sc;
+
+    return sc;
+}
+
+StatusCode DummyFastSimG4Tool::finalize() {
+    StatusCode sc;
+
+    return sc;
+}
+
+bool DummyFastSimG4Tool::CreateFastSimulationModel() {
+
+    return true;
+}

Simulation/DetSimFastModel/src/DummyFastSimG4Tool.h

 #ifndef DummyFastSimG4Tool_h
 #define DummyFastSimG4Tool_h
 
+#include "GaudiKernel/AlgTool.h"
+#include "DetSimInterface/IFastSimG4Tool.h"
 
+class DummyFastSimG4Tool: public extends<AlgTool, IFastSimG4Tool> {
+public:
+    using extends::extends;
+
+    StatusCode initialize() override;
+    StatusCode finalize() override;
+
+    bool CreateFastSimulationModel() override;
+
+private:
+
+};
 
 #endif