Feature request: variable font

[SuperPat45]

Is your feature request related to a problem?

No response

Feature description

Have you considered variable font support for Font Awesome 7?

Variable fonts are an evolution of the OpenType font specification that allows many different variants of a font to be incorporated into a single file, rather than having a separate font file for each width, thickness or style. They allow access to all variants contained in a given font file via CSS and a single @font-face reference.

We could precisely choose the line thickness and if the icon is filled or not with the font-variation-settings CSS property.

The Material Symbols font is fully configurable thanks to this technology:
https://fonts.google.com/icons

Alternatives

No response

Additional context

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Feature request checklist

• The title starts with "Feature request: " and is followed by the requested feature description
• This is a single feature
• I have searched for existing issues and to the best of my knowledge this is not a duplicate