Update README with TinyVG support info

[weihsinyeh]

No description provided.

[bito-code-review]

Code Review Agent Run Status

• Limitations and other issues: ❌ Failure - Bito Automatic Review Skipped - Files Excluded
  
  Bito didn't auto-review because all changed files are in the exclusion list.
  To trigger review, type /review in the comment and save.
  You can change the excluded files settings here, or contact the agent instance creator at [email protected].

[jserv]

Thank @weihsinyeh for contributing!