Adapting NeuG's PYTHON_BIND for Windows

[lnfjpt]

As titled.

[github-actions]

🤖 Auto-triage suggestion: this looks like a sub-issue of #418 — Fully support Node.js binding for NeuG (confidence: low).

Reason: The issue is about Python bindings for Windows, but umbrella #418 is specifically for Node.js bindings; however, it is the closest client-binding umbrella available, though it explicitly excludes Python bindings.

Auto-applied: labels → client

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