Feature request: Edit messages with s/e/d commands

[Shywizz]

By default in discord, if you make an error in your message you can correct it either by selecting it with the blue outline, or you can use sed-like subsitution It would be cool if s/e/d commands could proccesed as on the vanilla app, that way you could edit messages in the best way possible :P

[craftxbox]

I implemented this in my fork a while back. Unsure how much code has changed since but it may help as a reference to backport it: https://github.com/craftxbox/discordo/blob/main/ui/messages.go#L348 https://github.com/craftxbox/discordo/blob/main/ui/messages.go#L387