feat: Font compilation support for Linux

[Jklawreszuk]

Is your feature request related to a problem? Please describe.
Currently, Stride Asset Compiler does not support FileFont compilation on Linux

Describe the solution you'd like
Currently FileFontProvider relies on DirectWrite - windows only dependency, contributor willing to help needs to replace that with any popular glyph/font rendering library.

Additional context
Add any other context or screenshots about the feature request here.

Here are some questions that can aid in the description of the feature request:

• What are the use cases?
• What kind of options or settings are expected or wanted?
• What would the (pseudo) code look like?
• Does the feature affect behavior in the editor?
  • If so, how should this look in the editor?
• Is there a component or data structure involved?
• What kind of documentation is needed or needs to be updated?
• Should there be an example project?