Delete legacy JSON metadata (#1)

add dataset_info in dataset metadata

remove dummmy data

Align more metadata with other repo types (models,spaces) (#4607)

Remove config names as yaml keys (#4367)

Update files from the datasets library (from 1.18.0)

Update files from the datasets library (from 1.8.0)

Update files from the datasets library (from 1.7.0)

Update files from the datasets library (from 1.6.0)

Update files from the datasets library (from 1.4.0)

Update files from the datasets library (from 1.3.0)

Update files from the datasets library (from 1.2.0)