Automatic ephemeral reply to advise users to use fxtwitter links

[JstnMcBrd]

Copied from a discussion in #dev. See there for more details.

Instead of the bot automatically replacing the user's message when it detects a twitter.com link, how about it sends an ephemeral reply advising the user to edit their message to use fxtwitter.com?

Hi there! I noticed you posted a twitter link. Did you know you can improve the embed by editing your message to use fxtwitter.com instead of twitter.com?

Or something shorter like

Pro tip: replace twitter.com with fxtwitter.com for a better discord embed!

Or something more assertive

Please replace twitter.com with fxtwitter.com for an improved embed.

Or something goofy

Uh oh, looks like you posted a default twitter link. Such a terrible embed. That's really embarrassing. Better edit your message before anyone notices. Quick, replace twitter.com with fxtwitter.com!

[JstnMcBrd]

It looks like you can't send ephemeral replies to messages - that only works for interactions.