gui: configure and start bitcoind #1064

Job	Run time
linter	48s
linter_gui	4m 16s
unit_tests (1.54, ubuntu-latest)	4m 4s
unit_tests (1.54, macOS-latest)	4m 25s
unit_tests (1.54, windows-latest)	5m 46s
unit_tests (nightly, ubuntu-latest)	1m 18s
unit_tests (nightly, macOS-latest)	2m 23s
unit_tests (nightly, windows-latest)	2m 33s
unit_tests_gui (1.65, ubuntu-latest)	7m 14s
unit_tests_gui (1.65, macOS-latest)	6m 42s
unit_tests_gui (1.65, windows-latest)	9m 57s
unit_tests_gui (nightly, ubuntu-latest)	4m 45s
unit_tests_gui (nightly, macOS-latest)	4m 51s
unit_tests_gui (nightly, windows-latest)	5m 14s
	1h 4m 16s

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