progress with files added

src/CMakeLists.txt

src/Integrator/kernels.h

src/Interaction.cpp

src/Interaction/CPU.cpp

src/Interaction/CPU.h

src/Interaction/CUDA.cu

src/Interaction/CUDA.h

src/Interaction/kernels.h

src/Tests/CMakeLists.txt

src/Tests/type_name.h

src/Tests/vector3_precision.cu

src/Types.h

src/Types/Vector3.h