Document or automate attachment:// URLs in embeds

[kangalio]

Link

Serenity should either document this, or CreateEmbed should automatically move attachments it receives into the multipart form data and generate the attachment:// URL

Context
Another instance

[NightFeather0615]

The first context should work fine without attachments (at least on my machine), Discord embed supports HTTP(S) URLs by default.

I notice that CreateEmbed has a function called attachment but it seems to set the attachment to embed's image, is there a FAQ page like discord.py that we can use to provide a tutorial for local images?

By the way, the embed's author section doesn't seem to show up if you don't have a name set.