Add a "Suspend Message" feature for bots and server moderators

TL; DR: There should be a function to suspend a message until it can be checked by a human rather than immediately deleting it if a bot finds blacklisted words etc.

When a message is automatically deleted by a bot or a moderator, it can often be because of a misfire/mistake or a misinterpretation of a blacklisted or banned word when it is seen without context.

Instead of such messages being instantly deleted, there should be a feature to suspend them for examination by human moderators and then for the moderator to be able to accept or reject the message.