cmake TASKFLOW_CONFIG examples

dealii/dealii cmake/modules/FindDEAL_II_TASKFLOW.cmake :27 

find_package(TASKFLOW_CONFIG
  CONFIG QUIET
  NAMES Taskflow
  HINTS
    ${TASKFLOW_DIR}/lib/cmake/Taskflow
    ${TASKFLOW_DIR}
  PATH_SUFFIXES
    lib64/cmake/Taskflow
    lib/cmake/Taskflow
    lib${LIB_SUFFIX}/cmake/Taskflow
  NO_SYSTEM_ENVIRONMENT_PATH
  )