Add a check for non-ASCII characters

[Meakk]

Describe your changes

Issue ticket number and link if any

Checklist for finalizing the PR

• I have performed a self-review of my code
• I have added tests for new features and bugfixes
• I have added documentation for new features
• If it is a modifying the libf3d API, I have updated bindings
• If it is a modifying the .github/workflows/versions.json, I have updated docker_timestamp

AI Disclosure

• I did not use AI to generate any of the content of that pull request
• I used AI to generate code in that pull request, if yes please disclose which part of the code was generated and with which model.
• ...

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