feat(cosmos): ism dry-run

[daniel-savu]

Description

Implements dry_run_verify for the aggregation ISM on cosmwasm. One remaining issue is that the estimated gas is hardcoded to 1, because we're actually just querying via rpc rather than simulating a tx. The verify tx isn't marked as a contract entrypoint so it can't be called from outside iiuc. (here's the verify fn for reference).

Worth mentioning that the query interface for the aggregation ISM is named incorrectly - it should return fields called threshold and modules, but instead copies the response from the multisig ISM and returns threshold and validators. This can be particularly misleading because validators have 20-bytes long addresses, whereas modules (contracts) have 32-bytes long addresses.

Related issues

• Fixes https://github.com/hyperlane-xyz/issues/issues/807

Backward compatibility

yes

Testing

E2E. The ISM setup is routing -> aggregation (1/1) -> multisig (1/1)

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Latest commit: 395ac44

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