[Aptos Framework][Transaction] Add multisig flush Move funcs, txn type (#8411)

[alnoki]

@banool @chen-robert @lightmark @movekevin

Addresses #8411

• Adds multisig flush transaction Move flow for DoS mitigation
• Abstracts functionality to update owners and number of required signatures
• Adds MultisigFlush API transaction type

[davidiw]

Thanks for the contribution. Given that this is framework code and impacts network behavior, we'd push this to an AIP first, get feedback from the community, and then evaluate the risk reward for adding it. Curious where you and @movekevin landed on this.

[alnoki]

Thanks for the contribution. Given that this is framework code and impacts network behavior, we'd push this to an AIP first, get feedback from the community, and then evaluate the risk reward for adding it. Curious where you and @movekevin landed on this.

@davidiw #8411 contains a detailed description of the problem this is solving and the rationale for the solution, shall I submit an AIP based on that?

[github-actions]

This issue is stale because it has been open 45 days with no activity. Remove the stale label, comment or push a commit - otherwise this will be closed in 15 days.

[github-actions]

This issue is stale because it has been open 45 days with no activity. Remove the stale label, comment or push a commit - otherwise this will be closed in 15 days.

[alnoki]

Bumping to remove stale label per PR relevance to open aptos-foundation/AIPs#204

[github-actions]

This issue is stale because it has been open 45 days with no activity. Remove the stale label, comment or push a commit - otherwise this will be closed in 15 days.