Add --hide-unmonitored flag to ncurses frontend #187

Job	Run time
determine-distros	2s
Generate Debian packages for ROS2 jazzy	8m 28s
Generate Debian packages for ROS2 kilted	8m 49s
Generate Debian packages for ROS2 rolling	9m 4s
Generate Debian packages for ROS2 iron	8m 32s
Generate Debian packages for ROS2 humble	8m 46s
Smoke test ROS2 humble	1m 50s
Smoke test ROS2 kilted	1m 58s
Smoke test ROS2 iron	1m 56s
Smoke test ROS2 rolling	2m 9s
Smoke test ROS2 jazzy	2m 0s
	53m 34s

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