fix: Change Websocket to Deno's native method

[KonghaYao]

Description

Hello, I really like the sono.land project! When I started Deno and wanted to implement some related features, I found that it didn't run very well on my Deno version 1.42.3. So I forked this repository and improved the source code based on Deno's documentation about websockets. It runs well in my deno-script and I hope to upgrade the sono version on deno.land.

Reproduction steps

just run it in latest Deno version

import { Sono } from "https://denopkg.dev/gh/KonghaYao/sono.land@main/src/server.ts?33";
const sono = new Sono();
Deno.serve(async (req) => {
    return sono.connect(req);
});

Checklist

• [x] I've followed the Contributing guidelines
• [x] I've titled my PR according to the Conventional Commits spec
• [x] I've added tests that fail without this PR but pass with it
• [x] I've linted, tested, and commented my code
• [x] I've updated documentation (if appropriate)