feat: HTTP request tool

[michael-radency]

Summary

Tool to visit a website

Related tickets and issues

https://linear.app/n8n/issue/AI-162/tool-to-visit-a-website

[netroy]

We could use @mozilla/readability and jsdom here to cleanly extract the content that's likely relevant to an end-user.

Something like this perhaps:

import { JSDOM } from 'jsdom'
import { Readability } from '@mozilla/readability'

const dom = await JSDOM.fromURL(url)
const article = new Readability(dom.window.document, {
    keepClasses: true,
}).parse()

and then use article.content.

we could also consider using turndown to convert the html into markdown, which LLM tend to handle better than html IMO.

import Turndown from 'turndown'
const markdown = turndown.turndown(article.content)