Added HTTP methods (#452)

* Added HTTP methods

* Added unit tests

* Fixed linting issue

* Replaced localhost with 127.0.0.1

* Added random port generator

* Disabled http tests

* Disabled HTTP GET test

pkg/stdlib/io/net/lib.go

@@ -0,0 +1,17 @@
+package net
+
+import (
+	"github.com/MontFerret/ferret/pkg/runtime/core"
+	"github.com/MontFerret/ferret/pkg/stdlib/io/net/http"
+)
+
+// RegisterLib register `NET` namespace functions.
+func RegisterLib(ns core.Namespace) error {
+	io := ns.Namespace("NET")
+
+	if err := http.RegisterLib(io); err != nil {
+		return core.Error(err, "register `HTTP`")
+	}
+
+	return nil
+}