cmake UCX examples

NVIDIA/nvshmem CMakeLists.txt :91 

find_package(UCX PATHS ${UCX_HOME} REQUIRED)

ornladios/ADIOS2 cmake/DetectOptions.cmake :512 

find_package(UCX 1.9.0)

mercury-hpc/mercury src/na/CMakeLists.txt :218 

find_package(UCX 1.10 REQUIRED)