Backend/UtxoCoin: support native-segwit with cold storage #3114

Job	Run time
linux-github--dotnet-and-mono	3m 34s
linux-github--dotnet-and-newmono	6m 26s
linux-vanilla--newmono-only	8m 6s
linux-vanilla--stockdotnet6-and-newmono	6m 2s
linux-vanilla--stockdotnet6-and-stockmono	6m 19s
linux-vanilla--stockdotnet6-only	4m 47s
linux-vanilla--stockmono-only	5m 6s
macOS--dotnet6-and-mono	12m 55s
macOS--dotnet6-only	5m 21s
macOS--mono-only	11m 30s
windows--dotnet6-and-legacyFramework	6m 21s
windows--dotnet6-only	6m 18s
windows--legacyFramework-only	6m 51s
conventions	1m 8s
snap_pkg_beta	6m 50s
snap_pkg	7m 47s
	1h 45m 21s

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