improvements: approve flag, show message hash, display proposals

[cavemanloverboy]

Summary of improvements:

1. Add --approve flag on proposal-creating commands (config-transaction-create, vault-transaction-create, initiate-transfer, initiate-program-upgrade) to atomically create and approve in a single transaction. Includes permission check to ensure proposer has Vote permission.
2. Display message hash in confirmation prompt for all signing commands, allowing verification when using hardware wallet.
3. Add display-proposals command to list outstanding proposals (Draft/Active/Approved) with --limit/-n flag, fetching most recent first.

[vercel]

@cavemanloverboy is attempting to deploy a commit to the squads Team on Vercel.

A member of the Team first needs to authorize it.

[bguillaumat-squads]

ACK