update README: fix collision count (826), add realworld schema, split schema tables

add realworld config to README

add realworld subset (116 QA pairs, 4 types)

Merge v2 into main: updated collision/physics/compatibility QA + new README

Upload raw TSV file to separate folder

Update Dataset Card

Upload subset: physics

Upload subset: occlusion

Upload subset: compatibility

Upload subset: collision

initial commit