Check two Response fields equality.

import { equalsResponse } from "https://deno.land/x/http_utils@$VERSION/mod.ts";
import { assertEquals } from "https://deno.land/std@$VERSION/testing/asserts.ts";

assertEquals(
  await equalsResponse(
    new Response(null, { status: 204, headers: { "content-length": "0" } }),
    new Response(null, { status: 204, headers: { "content-length": "0" } }),
  ),
  true,
);
assertEquals(
  await equalsResponse(new Response("test"), new Response("test2")),
  false,
);