Fix `license` metadata (#2)

docs: add citation and arxiv link

fix: paperswithcode ID for this dataset is prost, not pika

docs: update readme

feat(default): add description and dataset_infos.json

Merge branch 'main' of https://huggingface.co/datasets/corypaik/prost into main

feat(default): add first version of PROST

data(default): add data for default config

Create README.md

initial commit