Filter material fonts for the Studio-Web, Web-C, and the font bundle for Offline HTML

[joanise]

We include the whole of Material fonts in each Offline HTML download, and we load the whole thing each time we load a web-c or the Studio-Web, but we only use about a dozen symbols out of it.

It would be great to filter them.

@dhdaines found these relevant references:
https://the-sustainable.dev/a-guide-to-subsetting-fonts/
https://github.com/zachleat/glyphhanger

[joanise]

This would probably be a minimal optimization for Studio-Web and online Web-Component, especially with caching, but a much more significant one for the Offline HTML and the b64 font bundle.