http: make early hints implementation more generic

In https://github.com/nodejs/node/pull/44180, we thought that the "early hints" implementation is not complete as it landed.

We need to fix it either as:

```js
response.writeEarlyHints({
 link: 'your link header',
 x-trace-id: 'id for diagnostics'
})
```

or

```js
response.writeInfomation(103, "Early Hints", {
 link: 'your link header',
 x-trace-id: 'id for diagnostics'
})
```