Adding SQA dataset
This dataset seems to have around 1000 configs. Therefore when creating the dummy data we end up with hundreds of MB of dummy data which we don't want to add in the repo.
Let's make this PR on hold for now and find a solution after the sprint of next week Closing in favor of #1566 
As discussed in #880 

Seems like automatic dummy-data generation doesn't work if the builder is a `ArrowBasedBuilder`, do you think you could take a look @lhoestq ?