- create struct GridInterface

src/GridGenerator/geometries/Triangle/Triangle.cu

src/GridGenerator/grid/Grid.cu

src/GridGenerator/grid/Grid.cuh

src/GridGenerator/grid/GridBuilder/LevelGridBuilder.cpp

src/GridGenerator/grid/GridBuilder/LevelGridBuilder.h

src/GridGenerator/grid/GridInterface.cu

src/GridGenerator/grid/GridInterface.cuh

...tor/grid/GridStrategy/GridCpuStrategy/GridCpuStrategy.cpp

...rator/grid/GridStrategy/GridCpuStrategy/GridCpuStrategy.h

...tor/grid/GridStrategy/GridGpuStrategy/GridGpuStrategy.cpp

...rator/grid/GridStrategy/GridGpuStrategy/GridGpuStrategy.h

src/GridGenerator/grid/GridStrategy/GridStrategy.h

src/GridGenerator/grid/kernel/runGridKernelGPU.cu

src/GridGenerator/grid/kernel/runGridKernelGPU.cuh

src/GridGenerator/io/GridVTKWriter/GridVTKWriter.cpp

...enerator/io/SimulationFileWriter/SimulationFileWriter.cpp

src/GridGenerator/utilities/cuda/cudaDefines.h

targets/apps/HULC/main.cpp