Add google fonts support

[softmarshmallow]

Add google fonts link import to web platforms, if available.

<!-- e.g. -->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Source+Code+Pro:ital,wght@0,200;0,300;0,400;0,500;0,600;0,700;0,900;1,200;1,300;1,400;1,500;1,600;1,700;1,900&display=swap" rel="stylesheet">

• search for google fonts repository if font family available
• add only required font style

References

• https://developers.google.com/fonts/docs/css2
• https://fonts.google.com/
• https://www.npmjs.com/package/@googleforcreators/fonts
  • https://github.com/GoogleForCreators/web-stories-wp/blob/main/packages/fonts/src/fonts.json
• https://www.npmjs.com/package/google-fonts-helper

[softmarshmallow]

Google fonts manifest reference available at

https://github.com/reflect-ui/fonts/tree/main/google-fonts

It takes up to 100kb, we can inline the json source it if we want. (would this be a wise choice regarding the size? - i don't know)