MAUI: first steps #4175

Job	Run time
linux-github--dotnet-and-newmono	8m 16s
linux-vanilla--newmono-only	9m 9s
linux-github--dotnet-and-mono	5m 42s
linux-vanilla--stockdotnet6-and-newmono	6m 25s
linux-vanilla--stockdotnet6-and-stockmono	6m 55s
linux-vanilla--stockdotnet6-only	5m 12s
linux-vanilla--stockmono-only	6m 10s
macOS--dotnet6-only	9m 27s
macOS--dotnet6-and-mono	7m 54s
macOS--mono-only	27m 30s
windows--dotnet6-only	1m 49s
windows--dotnet6-and-legacyFramework	2m 4s
windows--legacyFramework-only	13m 33s
conventions	0s
snap_pkg_beta	0s
snap_pkg	0s
	1h 50m 6s

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