AR limit per channel?#804

It would be helpful if autoresponders could have an option to trigger only once per thread or channel.
Right now, if staff use an AR like claim! in ticket threads, multiple moderators can send the trigger and the bot responds to all of them, making it look like several people claimed the same ticket.
A setting to limit the autoresponder to the first successful trigger (or block additional triggers after the first) would help prevent this and it looks cute! I love mimu. Based off this support ticket: https://discord.com/channels/479115079338557469/1480584473161760918