Add http module

[cedrickah]

I would like to know if I can work on the http module:

An example:

package main

import (
	"github.com/dop251/goja"
	"github.com/dop251/goja_nodejs/console"
	"github.com/dop251/goja_nodejs/http"
	"github.com/dop251/goja_nodejs/require"
)

func main() {
	registry := new(require.Registry)
	
        runtime := goja.New()
	registry.Enable(runtime)
        http.Enable(runtime)
	console.Enable(runtime)

	runtime.RunString(`
		var data = http.get("https://www.google.com");
		console.log(data);
    `)
}

I am trying to do something like:

package http

import (
	"io"
	"net/http"
	
	"github.com/dop251/goja"
	"github.com/dop251/goja_nodejs/require"
)

const ModuleName = "http"

type HttpModule struct {
	runtime     *goja.Runtime
}

func Get(url string) (string, error) {
	res, err := http.Get(url)
	if err != nil {
		return "", err
	}
	data, err := io.ReadAll(res.Body)
	if err != nil {
		return "", err
	}
	body := string(data)
	return body, nil
}

func (h *HttpModule) get(call goja.FunctionCall) goja.Value {
	res, err := Get(call.Argument(0).String())
	if err != nil {
		if _, ok := err.(*goja.Exception); !ok {
			panic(h.runtime.NewGoError(err))
		}
		panic(err)
	}
	ret := h.runtime.ToValue(res)
	return ret
}

func Require(runtime *goja.Runtime, module *goja.Object) {
	h := &HttpModule{
		runtime: runtime,
	}
	exports := module.Get("exports").(*goja.Object)
	exports.Set("get", h.get)
}

func Enable(runtime *goja.Runtime) {
	runtime.Set("http", require.Require(runtime, ModuleName))
}

func init() {
	require.RegisterCoreModule(ModuleName, Require)
}

It's a start. If I am authorized I can start working on this and submit a PR.