Taproot support #1840

Job	Run time
linter	31s
linter_gui	2m 6s
unit_tests (1.63, ubuntu-latest)	1m 41s
unit_tests (1.63, macOS-latest)	2m 23s
unit_tests (1.63, windows-latest)	2m 39s
unit_tests (nightly, ubuntu-latest)	1m 1s
unit_tests (nightly, macOS-latest)	1m 25s
unit_tests (nightly, windows-latest)	1m 52s
unit_tests_gui (1.65.0, ubuntu-latest)	3m 52s
unit_tests_gui (1.65.0, macOS-latest)	4m 37s
unit_tests_gui (1.65.0, windows-latest)	6m 57s
unit_tests_gui (nightly, ubuntu-latest)	2m 39s
unit_tests_gui (nightly, macOS-latest)	5m 17s
unit_tests_gui (nightly, windows-latest)	7m 21s
	44m 21s

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