Explore support for Express and Koa middleware

[nahtnam]

Explore how Express and Koa middleware work to see if we can wrap them and support them in light.

[nahtnam]

We can use https://nextjs.org/docs/api-routes/api-middlewares#connectexpress-middleware-support for connect support (as seen in #79).

[nahtnam]

Turns out Koa also has the concept of "context" (I had no idea, been a long time since I used it) but this is what it looks like

app.use(async (ctx, next) => {
  const start = Date.now();
  await next();
  const ms = Date.now() - start;
  console.log(`${ctx.method} ${ctx.url} - ${ms}ms`);
});

The context contains https://koajs.com/#context but it seems a lot more complicated because its half middleware (doesn't look like a hoc), half plugin (but also allows you execute code after main handler).

Deferring this to later since Koa isn't as popular