gui: add option to delete wallet #1587

Job	Run time
linter_gui	2m 18s
linter	35s
unit_tests (1.54, ubuntu-latest)	1m 48s
unit_tests (1.54, macOS-latest)	2m 55s
unit_tests (1.54, windows-latest)	2m 42s
unit_tests (nightly, ubuntu-latest)	54s
unit_tests (nightly, macOS-latest)	1m 22s
unit_tests (nightly, windows-latest)	1m 53s
unit_tests_gui (1.65, ubuntu-latest)	3m 44s
unit_tests_gui (1.65, macOS-latest)	7m 50s
unit_tests_gui (1.65, windows-latest)	5m 55s
unit_tests_gui (nightly, ubuntu-latest)	2m 31s
unit_tests_gui (nightly, macOS-latest)	3m 47s
unit_tests_gui (nightly, windows-latest)	3m 55s
	42m 9s

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