Prevent render blocking freeform css file

[joepagan]

Hi.

A Page speed / core web vitals issue with freeform is the cpresources files it loads need to be manipulated in a way not possible currently:

Essentially need to follow the steps here:
https://css-tricks.com/how-to-load-fonts-in-a-way-that-fights-fout-and-makes-lighthouse-happy/

<!-- We use the full link to the CSS file in the rest of the tags -->
<link rel="preload"
      as="style"
      href="......./plugin.css?v=ab1be50df97e07575984b6f70840c11aa3af4008" />

<link rel="stylesheet"
      href="....../plugin.css?v=ab1be50df97e07575984b6f70840c11aa3af4008"
      media="print" onload="this.media='all'" />