Fix a bunch of clazy warnings (level2)

CMakeLists.txt

src/algebra/TinyMatrix.hpp

src/algebra/TinyVector.hpp

src/algebra/Vector.hpp

src/mesh/CellType.hpp

src/mesh/Connectivity.cpp

src/mesh/Connectivity.hpp

src/mesh/ConnectivityComputer.cpp

src/mesh/ConnectivityComputer.hpp

src/mesh/ConnectivityDispatcher.cpp

src/mesh/ConnectivityMatrix.hpp

src/mesh/GmshReader.hpp

src/mesh/IConnectivity.hpp

src/mesh/ItemId.hpp

src/mesh/ItemToItemMatrix.hpp

src/mesh/ItemType.hpp

src/mesh/Mesh.hpp

src/mesh/MeshData.hpp

src/mesh/MeshNodeBoundary.hpp

src/mesh/RefId.hpp