cmake NVTX examples

NERSC/timemory cmake/Modules/Packages.cmake :812 

find_package(NVTX ${TIMEMORY_FIND_QUIETLY})

NVIDIA-Merlin/HugeCTR sparse_operation_kit/CMakeLists.txt :80 

find_package(NVTX REQUIRED)

ginkgo-project/ginkgo cmake/cuda.cmake :15 

find_package(NVTX REQUIRED)