better google font performance

[sc0ttj]

can limit to included chars to a subset (latin1, etc), or even specific letters, unicode symbols, NerdFont stuff, etc ...

See examples:

• https://www.labnol.org/internet/reduce-google-fonts-size/21057/
• https://codepen.io/tejask/pen/NWKVVyE?editors=1100
• https://ashton.codes/preload-google-fonts-using-resource-hints/