Allow interaction response deletion without MANAGE_MESSAGES

[bignutty]

Previously with message commands, many bots deleted command responses when the initial command message was deleted. Interaction responses can only be deleted by server moderators, despite the message stating who ran a command. This causes issues if you for example ran a command in the wrong channel or accidentally put something in command arguments that you didn't mean to share.

The solution would be a new flag you can apply to an interaction response, similar to ephemeral, which allows the person that triggered the interaction and to delete the response or follow-up message regardless of manage messages permissions in a server.

This allows users to have a quick and easily understood method of deleting their commands (just like with system join messages) without having to contact mods of a server or developers having to build unintuitive workarounds for the issue.

[MaskDuck]

Well, this is really great! I love this idea!