Log impersonation actions in audit log

Zendesk issue: https://gitlab.zendesk.com/agent/tickets/14715

We want to make it possible to see what an admin did while impersonating another user. All the taken actions (edits / create / delete actions) should be logged in the system audit log.

It wouldn't be impersonation if it would be different, reducing the usefulness of the feature.

Administrators have access to everything. They should be trusted. I think we can assume these are trusted people.

Maybe we can log all their actions are impersonating in the audit log?

The customer responded via Zendesk to your comments @JobV. They think adding something like this to the audit log would really improve things.

@dblessing so let's do that.

Milestone changed to 8.8

Title changed from Attribute impersonation events differently than normal to Log impersonation actions in audit log

Added feature proposal label

Updated the issue to match.

Added audit events label

mentioned in issue #579

Milestone changed to Backlog

mentioned in issue #743

Customer requested this in ZD: https://gitlab.zendesk.com/agent/tickets/79860

/cc @JobV