MAUI: first steps #4179

Job	Run time
macOS--dotnet8-and-mono	28m 54s
linux-github--dotnet-and-newmono	8m 18s
linux-github--dotnet-and-mono	6m 44s
linux-vanilla--stockdotnet8-only	5m 31s
linux-vanilla--stockmono-only	6m 24s
macOS--dotnet8-only	10m 52s
macOS--mono-only	23m 8s
windows--dotnet8-and-legacyFramework	18m 12s
windows--dotnet8-only	19m 12s
windows--legacyFramework-only	13m 21s
linux-vanilla--newmono-only	9m 10s
linux-vanilla--stockdotnet8-and-newmono	6m 12s
linux-vanilla--stockdotnet8-and-stockmono	6m 51s
conventions	0s
snap_alpha	0s
snap_pkg	0s
snap_pkg_beta	0s
	2h 42m 49s

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