import { Accepts } from "https://dotland.deno.dev/x/opine@2.2.0/deps.ts";
Return accepted charsets or best fit based on charsets.
Given Accept-Charset: utf-8, iso-8859-1;q=0.2, utf-7;q=0.5
an array sorted by quality is returned:
['utf-8', 'utf-7', 'iso-8859-1']