feat(client/v2): support definitions of inner messages #76448

Job	Run time
split-test-files	13s
test-integration	6m 55s
test-clientv2	1m 22s
test-sim-nondeterminism	3m 46s
test-system	12m 59s
test-core	26s
test-coretesting	26s
test-errors	36s
test-depinject	35s
test-math	32s
test-indexer-postgres	21s
test-schema	33s
test-schema-testing	26s
test-simapp	1m 8s
test-simapp-v2	5m 37s
test-collections	23s
test-collections-protocodec	20s
test-orm	28s
test-cosmovisor	23s
test-hubl	23s
test-confix	24s
test-log	27s
test-store	33s
test-store-v2	33s
test-x-accounts	28s
test-x-accounts-base	29s
test-x-accounts-lockup	30s
test-x-accounts-multisig	23s
test-x-circuit	1m 1s
test-x-nft	28s
test-x-tx	22s
test-x-distribution	31s
test-x-evidence	25s
test-x-feegrant	31s
test-x-params	31s
test-x-upgrade	36s
test-x-protocolpool	26s
test-x-authz	25s
test-x-bank	35s
test-x-gov	28s
test-x-group	36s
test-x-staking	27s
test-x-slashing	35s
test-tools-benchmark	40s
test-x-consensus	26s
test-x-mint	27s
test-x-epochs	33s
tests (00)	8m 33s
tests (01)	3m 39s
tests (02)	4m 16s
tests (03)	4m 37s
repo-analysis	1m 41s
	1h 14m 28s

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