Generating MSDFs on the fly

[wrangelvid]

troika text has quite an interesting approach. They generate the signed distance fields for each glyph on the fly, while also allowing its users to specify characters to preload or even provide already compiled SDFs.
The latter would allow a dynamic and simple approach to enable multiple languages.
Alternatively, one could generate the whole character set, but save for each glyph and have the current json text format just reference it to enable lazy loading.