Easy modmail button

[Kirzi]

This was discussed awhile ago as well. The idea is basically a new command that looks something like:

.qmodmail "This thread is sketchy because reasons" https://www.reddit.com/r/pokemontrades/whatever

And that would generate a modmail that looks something like this:

Authenticiation issues were brought up in IRC, but I think we could get around that by simply having it generate the modmail itself by modifying the URL and pasting that URL in IRC. Plus that way, we could add more details to the modmail or edit it before sending. The only issue there would be the fact that the URL would be pretty big, so maybe it'd have to use pastebin or something. Not sure what the best method for that would be.

---

Another idea that was discussed at the same time was having Porybot automatically reply to modmails containing links with a similar format to the above, which isn't a bad idea (aside from the potential infinite loops issue).

I'd probably still want the IRC command if we did that, though, so if anything I'd suggest doing both, if possible.