MAUI: first steps #4171

Job	Run time
macOS--dotnet8-and-mono	27m 37s
macOS--mono-only	27m 54s
windows--legacyFramework-only	14m 49s
macOS--dotnet8-only	7m 42s
windows--dotnet8-and-legacyFramework	19m 30s
linux-github--dotnet-and-mono	6m 12s
linux-github--dotnet-and-newmono	8m 42s
linux-vanilla--stockdotnet8-and-newmono	6m 20s
linux-vanilla--stockdotnet8-only	5m 19s
linux-vanilla--stockmono-only	6m 9s
windows--dotnet8-only	19m 11s
linux-vanilla--newmono-only	9m 32s
linux-vanilla--stockdotnet8-and-stockmono	7m 20s
conventions	1m 20s
snap_alpha	4m 26s
snap_pkg_beta	7m 25s
snap_pkg	7m 14s
	3h 6m 42s

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