Enhancements to cleos multisig: approve with proposal_hash, invalidate, and improved review

[arhag]

Change Description

Resolves #6272.

Special shoutout to @conr2d who took the initiative to resolve #6272 with PR #6298. There were undocumented plans to improve the cleos multisig sub-commands which this PR addresses in addition to the enhancements described in #6272. So this PR ultimately ended up superseding PR #6298.

Adds optional proposal_hash argument to cleos multisig approve to support the new safety feature introduce to the eosio.msig contract in EOSIO/eosio.contracts#121.

Adds the cleos multisig invalidate sub-command to call the invalidate action of the eosio.msig contract introduced in EOSIO/eosio.contracts#59.

Modifies the cleos multisig review sub-command:

• Adds proposer and transaction_id fields to the returned JSON. The transaction_id in particular is useful since that is the hash that would need to be passed in as proposal_hash in the cleos multisig approve sub-command (assuming the user wants to use that optional feature for added security).

• Adds cleos option --show-approvals which if enabled will add an extra array field approvals to the returned JSON. This approvals field is a list of all the requested approvals for the proposed transaction along with their status: unapproved, approved, invalidated. Approval time, unapproval time, and invalidation time may also be present if appropriate. The approvals field will still correctly show up (assuming it is requested with the --show-approvals option) even if the eosio.msig contract is an old version; however, certain features, such as invalidation status and approval/unapproval times, will of course not be available.

Consensus Changes

None

API Changes

None

Documentation Additions

Documentation for cleos needs to be updated to reflect the changes described above.