add script snippet

// jquerify.js
// https://github.com/bgrins/devtools-snippets
// Add jQuery to any page that does not have it already.

(function () {
    const addScript = (sc) =>{
        var s = document.createElement('script');
        s.setAttribute('src', sc);
    
        document.body.appendChild(s);
    }
    
    addScript('//ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js'); 
})();