Continue MeshDataManager definition

src/language/modules/SchemeModule.cpp

src/language/modules/VTKModule.cpp

src/main.cpp

src/mesh/CMakeLists.txt

src/mesh/DiamondDualMeshBuilder.cpp

src/mesh/GmshReader.cpp

src/mesh/IMesh.cpp

src/mesh/IMesh.hpp

src/mesh/IMeshData.hpp

src/mesh/MeshData.hpp

src/mesh/MeshDataManager.cpp

src/mesh/MeshDataManager.hpp

src/mesh/MeshNodeBoundary.hpp

src/output/VTKWriter.hpp

src/scheme/AcousticSolver.hpp

src/scheme/FiniteVolumesEulerUnknowns.hpp