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feat(messages): split MessagesView, move search/actions to nav, reuse @antfu/design #491

Job	Run time
e2e	2m 26s
unit-test / test (windows-latest, 26)	4m 38s
unit-test / test (windows-latest, 22)	5m 49s
unit-test / test (ubuntu-latest, 22)	2m 29s
unit-test / test (windows-latest, 24)	4m 53s
unit-test / test (ubuntu-latest, 24)	2m 13s
unit-test / test (ubuntu-latest, 26)	2m 13s
unit-test / lint	1m 54s
	26m 35s