Add support for linking command to display a short link embed

[fredster33]

It'd be nice if WikiBot could output an embed when it sends links. This allows people (especially lurkers) to get a basic understanding of what the page is about without needing to click on the link. Here's a mockup:

[stjohann]

That’s not something that will be done at any point because WikiBot can output any number of links that are in a message. Additionally, rendering these sorts of embeds takes more time and API requests, whereas current way WikiBot works doesn’t require those.

[stjohann]

Additionally, if we decided to use automatic Discord embeds like described in #25, they fail on links like https://ru.wikipedia.org/wiki/Википедия:Администраторы/Бывшие and display the content of https://ru.wikipedia.org/wiki/Бывшие instead.

Closing this issue as wontfix.

[stjohann]

Re-reading this issue again, I guess this can be done as a new command to display one link at a time like that. This would, at least, mean that people would use this type of links less, and it wouldn’t interfere with the standard way of wiki linking by the bot. Adjusting accordingly.