add NeurIPS-2026-ready Croissant file with RAI metadata

update self-references logo-lab/rbench -> logo-lab/trl-rbench

update self-references logo-lab/rbench -> logo-lab/trl-rbench

refresh LICENSES to match shipped schema (record_json layout)

add rbench schema docs

add rbench LICENSES

Upload LICENSES.md with huggingface_hub

add rbench README

Upload folder using huggingface_hub

Upload folder using huggingface_hub

initial commit