Merge branch 'feature/clang-format' into 'develop'

.clang-format

CMakeLists.txt

CONTRIBUTING.md

cmake/ClangFormatProcess.cmake

packages/.clang-format

src/algebra/TinyMatrix.hpp

src/algebra/TinyVector.hpp

src/language/PastisParser.cpp

src/language/PastisParser.hpp

src/main.cpp

src/mesh/CellType.hpp

src/mesh/Connectivity.cpp

src/mesh/Connectivity.hpp

src/mesh/ConnectivityComputer.cpp

src/mesh/ConnectivityComputer.hpp

src/mesh/ConnectivityDescriptor.hpp

src/mesh/ConnectivityDispatcher.cpp

src/mesh/ConnectivityDispatcher.hpp

src/mesh/ConnectivityMatrix.hpp

src/mesh/GmshReader.cpp