docs: publish Maya transfer setup guide

[SeeleAIBot2]

Summary

• replaces the internal Chinese README with an English public setup guide for SEELE Transfer for Maya 0.2.0
• adds prominent production package and SEELE AI 3D Model Generator handoff links
• documents extracted-module installation on Windows/macOS, workflow, capability-driven format status, security/network behavior, integrity metadata, FAQ, troubleshooting, and test boundaries
• states the repository's missing LICENSE file neutrally rather than asserting a license

Validation

• PYTHONDONTWRITEBYTECODE=1 python3 -m unittest discover -s tests -v (70 passed, 1 Windows-only test skipped)
• git diff --check
• verified five external URLs via curl -I
• downloaded the production package and verified 26,793 bytes and SHA-256 d13cea96e9cb58597a127141127d9c14a854e61b12be8f933338e7cb67123415