chore: 🤖 review permissions

[sansan]

Description

• for discussion
• adds comments comparing permissions used on chain vs those that we check for with getAuthorization for procedures

on chain there are multiple ways how we check permissions, the main ones are

• Identity::check_perms -> cheks if the identity can execute module/extrinsic on chain
• External Agents:check_perms -> checks if the external agent has ownership ower asset, can execute the tx (module/extrinsic)
• Checks for portfolio ownership

Additional checks are done via specific methods in the extrinsic - e.g. if the signer is multiSig admin, if it is multiSig

JIRA Link

https://polymesh.atlassian.net/browse/DA-1411