MAUI: first steps #4115

Job	Run time
linux-github--dotnet-and-mono	7m 48s
linux-github--dotnet-and-newmono	8m 13s
linux-vanilla--stockmono-only	6m 7s
macOS--dotnet8-and-mono	17m 35s
macOS--dotnet8-only	6m 35s
macOS--mono-only	11m 26s
windows--dotnet8-and-legacyFramework	18m 5s
windows--dotnet8-only	16m 16s
windows--legacyFramework-only	23m 59s
linux-vanilla--newmono-only	9m 24s
linux-vanilla--stockdotnet8-and-newmono	6m 16s
linux-vanilla--stockdotnet8-and-stockmono	7m 8s
linux-vanilla--stockdotnet8-only	5m 32s
conventions	1m 32s
snap_pkg_beta	7m 18s
snap_pkg	6m 58s
snap_alpha	5m 1s
	2h 45m 13s

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