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feat(messages): split MessagesView, move search/actions to nav, reuse @antfu/design #489

Job	Run time
unit-test / lint	1m 51s
e2e	2m 39s
unit-test / test (windows-latest, 24)	4m 34s
unit-test / test (ubuntu-latest, 26)	1m 59s
unit-test / test (ubuntu-latest, 22)	2m 25s
unit-test / test (windows-latest, 26)	4m 51s
unit-test / test (ubuntu-latest, 24)	2m 5s
unit-test / test (windows-latest, 22)	5m 6s
	25m 30s