feat: query witnesses over `wit/1` protocol #2069

Job	Run time
Run loadtest (anvil)	1m 54s
typos	8s
Run loadtest (geth)	2m 6s
Install go package	31s
Lint	1m 48s
Check gen-load-test-modes generated files	55s
Check gen-doc generated files	1m 52s
Check gen-go-bindings generated files	21s
Check gen-json-rpc-types generated files	1m 47s
Check gen-proto generated files	42s
Test	2m 1s
	14m 5s

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