gui, projects: Implement greylist state for projects in GUI projects table #2818

Job	Run time
macOS 12 native [GOAL install] [GUI] [no depends]	8m 16s
ARM [GOAL install] [buster]	2m 2s
Lint	46s
Win32	2m 40s
Win64	4m 13s
i386 Linux [GOAL install] [focal]	1m 58s
x86_64 Linux [GOAL install] [GUI] [focal] [no depends]	13m 13s
x86_64 Linux [GOAL install] [GUI] [bionic] [no depends]	11m 25s
macOS 10.14 [GOAL deploy] [GUI] [no tests] [focal]	9m 13s
	53m 46s

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