Alternatives to FA icons

Problem/Motivation

There are plenty social media without FA icon, for example: Lemmy, Hubzilla and, I suppose, most of the Fediverse networks.

My module Fediverse Social Link Field, that extends this one, is affected by this. But it's also this one if trying to add any social media not included by Font Awesome.

Proposed resolution

Add a way to attach icon image files (or maybe better, external links to them)