Missing `content-length` header

[barjin]

Responses acquired through the Node.JS bindings are missing the content-length response header

import { Impit } from 'impit';

const client = new Impit();

const impitResponse = await client.fetch('https://crawlee.dev');
console.log(impitResponse.headers.get('content-length'));
// prints null

const nativeResponse = await fetch('https://crawlee.dev');
console.log(nativeResponse.headers.get('content-length'));
// prints a number > 10000

[barjin]

This is expected behaviour by upstream dependencies, see tower-http here.