SECURITY.md: add model-audit-lite DOI (Zenodo)

Update links: masahirocom -> masahiroid; install via PyPI (pip install model-audit-lite)

Security: bilingual SECURITY.md with verified-conversion audit (model-audit-lite 0.5.2), ML-BOM, README link

Reformat README: EN/JA stacked sections with anchor links

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Upload SECURITY.md with huggingface_hub

Upload folder using huggingface_hub

initial commit