Merge branch 'open_source' of https://git.rz.tu-bs.de/irmb/VirtualFluids_dev into open_source

.gitlab-ci.yml

3rdParty/MuParser/CMakeLists.txt

3rdParty/MuParser/include/muParser.h

3rdParty/MuParser/include/muParserBase.h

3rdParty/MuParser/include/muParserDLL.h

3rdParty/cuda_samples/README

3rdParty/cuda_samples/exception.h

3rdParty/cuda_samples/helper_cuda.h

3rdParty/cuda_samples/helper_functions.h

3rdParty/cuda_samples/helper_image.h

3rdParty/cuda_samples/helper_string.h

3rdParty/cuda_samples/helper_timer.h

3rdParty/googletest/CMakeLists.txt

3rdParty/googletest/googlemock/CMakeLists.txt

3rdParty/googletest/googletest/CMakeLists.txt

3rdParty/metis/metis-5.1.1/GKlib/GKlibSystem.cmake

3rdParty/metis/metis-5.1.1/libmetis/CMakeLists.txt

CMake/3rd.cmake

CMake/3rd/OpenMP.cmake

CMake/3rd/boost.cmake