Backend/Utxo: support native segwit #2882

Job	Run time
macOS--mono-only	17m 29s
macOS--dotnet6-only	6m 53s
linux-github--dotnet-and-mono	3m 43s
linux-github--dotnet-and-newmono	6m 36s
linux-vanilla--newmono-only	8m 49s
linux-vanilla--stockdotnet6-and-newmono	5m 39s
linux-vanilla--stockdotnet6-and-stockmono	6m 18s
linux-vanilla--stockmono-only	5m 5s
linux-vanilla--stockdotnet6-only	4m 49s
macOS--dotnet6-and-mono	14m 59s
windows--dotnet6-and-legacyFramework	6m 23s
windows--dotnet6-only	6m 1s
windows--legacyFramework-only	12m 14s
conventions	1m 9s
snap_pkg_beta	0s
snap_pkg	0s
	1h 46m 7s

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