Add --hide-unmonitored flag to ncurses frontend #186

Job	Run time
determine-distros	2s
Generate Debian packages for ROS2 iron	8m 26s
Generate Debian packages for ROS2 rolling	8m 55s
Generate Debian packages for ROS2 jazzy	8m 40s
Generate Debian packages for ROS2 kilted	8m 5s
Generate Debian packages for ROS2 humble	8m 27s
Smoke test ROS2 iron	1m 51s
Smoke test ROS2 humble	2m 0s
Smoke test ROS2 kilted	2m 4s
Smoke test ROS2 rolling	2m 11s
Smoke test ROS2 jazzy	1m 49s
	52m 30s

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