Include mod in action outputs in the thread

[hyperneutrino]

Right now, figuring out which mod approved/denied a verification and looking at the verification itself requires finding two separate pieces of information. We can streamline this a bit by simply outputting the acting mod in the ticket.

Note that this message is generated after the action is taken so users being approved will be locked out by receiving the verified role and denied users will be removed from the server first. That said, showing the acting mod to approved users isn't much of a big deal as usually it's the person asking them questions and they will likely assume that anyway.

[hyperneutrino]

Tested locally in DevPlace!

[MysticMia]

Wouldn't user mentions be annoying as verifier? Could make it send the username and id of the verifier or make it a silent ping instead?
or maybe pings aren't as big of a deal because the verifier remains in the verify channel for the second that the message is sent.

[hyperneutrino]

@MysticMia resolve includes allowedMentions: { parse: [] } in both instances that call verifyUser so it does not actually ping