MAUI: first steps #4167

Job	Run time
linux-vanilla--stockdotnet6-and-newmono	6m 11s
linux-github--dotnet-and-mono	1m 30s
linux-vanilla--newmono-only	9m 29s
linux-github--dotnet-and-newmono	8m 10s
linux-vanilla--stockdotnet6-and-stockmono	7m 3s
linux-vanilla--stockdotnet6-only	5m 29s
linux-vanilla--stockmono-only	6m 13s
macOS--dotnet6-and-mono	7m 37s
macOS--dotnet6-only	5m 48s
macOS--mono-only	26m 33s
windows--dotnet6-and-legacyFramework	6m 28s
windows--dotnet6-only	6m 42s
windows--legacyFramework-only	8m 27s
conventions	0s
snap_pkg_beta	0s
snap_pkg	0s
snap_alpha	0s
	1h 45m 40s

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