Separate and factorize dual 1d mesh builder

src/language/modules/MeshModule.cpp

src/mesh/CMakeLists.txt

src/mesh/DiamondDualMeshBuilder.cpp

src/mesh/DiamondDualMeshBuilder.hpp

src/mesh/Dual1DMeshBuilder.cpp

src/mesh/Dual1DMeshBuilder.hpp

src/mesh/DualMeshManager.cpp

src/mesh/DualMeshManager.hpp

src/mesh/MedianDualMeshBuilder.cpp

src/mesh/MedianDualMeshBuilder.hpp

tests/test_CellIntegrator.cpp

tests/test_DualMeshManager.cpp

tests/test_EdgeIntegrator.cpp

tests/test_FaceIntegrator.cpp