Hi Mauro,
You can create such file. Here is a sample markup in the file.
<?xml version="1.0" encoding="utf-8"?>
<assets>
<scripts>
<file>js/jquery.ckie.js</file>
<file>js/script.js</file>
</scripts>
<stylesheets>
<file>fonts/font-awesome/css/font-awesome.min.css</file>
</stylesheets>
</assets>
Gardner.