Returns Twemoji's SVG for emoji, whose file name cp comes from
emojiToCodepoint. emoji only serves the error message. It fetches with
plain fetch, since the host is fixed, and gives up after 15 s.
Parameters
emoji: string
cp: string
Return Type
Promise<string>
Throws
Error
When the glyph can't be fetched.
Usage
import { fetchTwemojiSvg } from "api/remote/twemoji.ts";