Rename TypeOfitem to ItemType

src/mesh/Connectivity.cpp

src/mesh/Connectivity.hpp

src/mesh/ConnectivityComputer.cpp

src/mesh/ConnectivityComputer.hpp

src/mesh/ConnectivityUtils.hpp

src/mesh/IConnectivity.hpp

src/mesh/ItemType.hpp

src/mesh/MeshData.hpp

src/mesh/MeshNodeBoundary.hpp

src/mesh/SubItemValuePerItem.hpp

src/output/VTKWriter.hpp

src/scheme/AcousticSolver.hpp