MAUI: first steps #4165

Job	Run time
macOS--dotnet8-and-mono	26m 54s
macOS--mono-only	28m 53s
linux-github--dotnet-and-newmono	8m 55s
linux-vanilla--stockmono-only	5m 59s
linux-github--dotnet-and-mono	6m 13s
macOS--dotnet8-only	8m 2s
windows--legacyFramework-only	6m 9s
windows--dotnet8-and-legacyFramework	18m 20s
windows--dotnet8-only	19m 6s
linux-vanilla--newmono-only	9m 8s
linux-vanilla--stockdotnet8-and-newmono	6m 15s
linux-vanilla--stockdotnet8-and-stockmono	6m 55s
linux-vanilla--stockdotnet8-only	5m 54s
conventions	1m 35s
snap_pkg	6m 47s
snap_pkg_beta	6m 46s
snap_alpha	3m 42s
	2h 55m 33s

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