Makes GM_xmlhttpRequest and GM_download queued
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/460385/1221394/GM%20web%20hooks.js
GMXHRHook(5); => makes all GM_xmlhttpRequest queued, and ongoing GM_xmlhttpRequests will be no more than 5GMDLHook(3); => makes all GM_download queued, and ongoing GM_downloads will be no more than 3
