message: fwd decl geomodel
diff: #include <ringmesh/basic/common.h>
  -#include <ringmesh/geomodel/geomodel.h>
  +//#include <ringmesh/geomodel/geomodel.h>
  #include <ringmesh/geomodel/geomodel_builder.h>
  #include <ringmesh/basic/geometry.h>
  namespace RINGMesh
  {
  -// FORWARD_DECLARATION_DIMENSION_CLASS( GeoModel );
  -// ALIAS_2D_AND_3D( GeoModel );
  + FORWARD_DECLARATION_DIMENSION_CLASS( GeoModel );
  + ALIAS_2D_AND_3D( GeoModel );
  //
  // namespace Geometry
  // {
  