Adding Roman Urdu Hate Speech dataset
@lhoestq can you review when you have some time? Also were the previous CI fails due to the Google Drive tests which were excluded by #3982 ? > were the previous CI fails due to the Google Drive tests which were excluded by https://github.com/huggingface/datasets/pull/3982 ?

Yes exactly, merging `master` into your branch fixed the CI ;) _The documentation is not available anymore as the PR was closed or merged._
This Pull request will add the Roman Urdu Hate speech Dataset. 