First Kokkos version of 'mo_lib_interpolation_scalar' (!36)

src/interpolation/CMakeLists.txt

src/interpolation/interpolation_bindings.cpp

src/interpolation/interpolation_bindings.h

src/interpolation/mo_lib_interpolation_scalar.cpp

src/interpolation/mo_lib_interpolation_scalar.hpp

src/interpolation/mo_lib_interpolation_vector.cpp

src/interpolation/mo_lib_interpolation_vector.hpp

test/c/CMakeLists.txt

test/c/test_interpolation_scalar.cpp

test/c/test_interpolation_vector.cpp