Fix missing tags in dataset cards (#4896)

Fix titles in dataset cards (#4824)

Add `language_bcp47` tag (#4753)

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

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 1.6.1)

Update files from the datasets library (from 1.6.0)

Update files from the datasets library (from 1.3.0)

Update files from the datasets library (from 1.2.0)