feat(messages): split MessagesView, move search/actions to nav, reuse… #496

Job	Run time
e2e	2m 20s
unit-test / lint	2m 1s
unit-test / test (ubuntu-latest, 22)	2m 9s
unit-test / test (windows-latest, 22)	6m 27s
unit-test / test (ubuntu-latest, 24)	2m 12s
unit-test / test (ubuntu-latest, 26)	2m 22s
unit-test / test (windows-latest, 26)	4m 34s
unit-test / test (windows-latest, 24)	4m 45s
	26m 50s

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