feat: add an analysis of affected store paths if we delete the proposed nixos images

doc: update README

feat: update dataset config in README

feat: add a filtered narinfos dataset containing nixos images

chore: unpicking a bad oid reference in git lfs

wip: trying to unpick a bad oid reference in git lfs

feat: add size categories to README

feat: add initial README.md with config for huggingface