[Development] Font rendering on X11/Wayland: New FreeType API to toggle LCD filters and stem darkening on a per-font basis, would love a review

[Nikolaus Waxweiler]

> Here is a proof of concept: https://codereview.qt-project.org/#/c/177325/

Oh nice, didn't expect something so soon. Will have a look.

> Note, we need a FreeType API for getting to the module-name from the face, or 
> a direct getter of the stem-darkening on the face. 

Ah, hm. I only know of a way from within the FT source. Will get back to
you.