Scale font weight based on size in custom builds

Is your feature request related to a problem? Please describe. When Iosevka is used at small sizes the strokes become too thin and makes everything hard to read. This can be exacerbated by low DPI display as well.

I have manually increased the weight in my custom build. However, this is not ideal because when I increase the font size, everything becomes clunky. I want large text to remain elegant and lean, while small text should be heavier so easier to read.

Describe the solution you'd like I would like to have a configuration option that allow scaling the weight of the font size based on the size of the font. Or an existing way that allows to do this, maybe programmatically with a patch. I want this weight configuration to be baked into the font that I build.

Describe alternatives you've considered I have done this with fontconfig. It works with ghostty, but it doesn't work with alacritty. See https://github.com/alacritty/alacritty/issues/8975. I would like to have a font that is built to have my custom size interpolation.

Thank you for making this font!