Replacing USE_HIP with USE_KOKKOS
-- Generalizing the specification of KOKKOS device adapter
-- Adding an option VTK_KOKKOS_BACKEND
to specify specific backend
either HIP
or SYCL
-- Adding warning on VTK_USE_HIP
-- Generalizing the specification of KOKKOS device adapter
-- Adding an option VTK_KOKKOS_BACKEND
to specify specific backend
either HIP
or SYCL
-- Adding warning on VTK_USE_HIP