refactor: improve Geant4 solid synchronization and update documentation for VTK integration

src/HEP/Geant/Solid.h

@@ -53,6 +53,7 @@ public:
   void SetMaterial(G4Material *material);
   
   void SetSizeUnit(const char *unit);
+  
   // Implementiamo SetParent qui, per tutti.
   virtual void SetParent(Solid *parent); 
 
@@ -71,11 +72,8 @@ public:
 
   template < typename Ar >
   void serialize(Ar &ar, const unsigned int version) {
-    ar & m_Name;
+    ar & boost::serialization::make_nvp("Name", m_Name);
   }
-    
-    
-
 
 protected:
 
@@ -123,6 +121,7 @@ public:
 
   BoxSolid(const char *name = "");
   BoxSolid(const char *name, ContainerBox *box);
+
   virtual G4VSolid* GetG4Solid() const override { return (G4VSolid*)m_Solid; }
   
   ContainerBox* GetObject() const { return m_ContainerBox; }