Import Font Awesome 6.4.0

Summary:
Web fonts + SVG-based frameworks

Ref T1881

Test Plan: Load https//assets.nasqueron.org/lib/fontawesome/6.4.0/css/brands.min.css

Reviewers: dereckson

Maniphest Tasks: T1881

Differential Revision: https://devcentral.nasqueron.org/D3117