Add --hide-unmonitored flag to ncurses frontend #190

Job	Run time
determine-distros	3s
Generate Debian packages for ROS2 rolling	8m 48s
Generate Debian packages for ROS2 kilted	8m 29s
Generate Debian packages for ROS2 iron	8m 18s
Generate Debian packages for ROS2 jazzy	8m 23s
Generate Debian packages for ROS2 humble	8m 30s
Smoke test ROS2 humble	1m 53s
Smoke test ROS2 kilted	2m 0s
Smoke test ROS2 jazzy	1m 57s
Smoke test ROS2 rolling	1m 54s
Smoke test ROS2 iron	1m 53s
	52m 8s

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