[BUG] Ban user deletes all of that users messages #155

Describe the bug

When a user is banned, zorak will also delete all of their messages, in all channels

Expected behavior

The messages are left undeleted, unless a second parameter is provided for the amount of minutes back messages should be deleted

To Reproduce

Ban loopy and find out

Screenshots

On mobile, but I think this is fairly self explanatory.

How was the bot ran

Issue is already in main

Additional context

Additionally, we could log all deleted messages, but perhaps that's a feature instead of a bug ticket.