cmake HAVE_PCL_CONVERSIONS examples

MRPT/mrpt libs/ros1bridge/CMakeLists.txt :24 

set_property(GLOBAL PROPERTY mrpt_ros1bridge_UNIT_TEST_EXTRA_DEFINITIONS "HAVE_PCL_CONVERSIONS")

MRPT/mrpt libs/ros2bridge/CMakeLists.txt :24 

set_property(GLOBAL PROPERTY mrpt_ros2bridge_UNIT_TEST_EXTRA_DEFINITIONS "HAVE_PCL_CONVERSIONS")