GitLab

* add jaqket_v2 and jcommonsenseqa

* remove comments

* remove num_beams as it is incompatible with vllm

* add jnli + refactor

* rename jnla -> jnli

* add jsquad + replace colon chars with the Japanese unicode

* ignore whitespaces in generation tasks

* add marc_ja

* add xwinograd + simplify other yamls

* add mgsm and xlsum

* refactor xlsum

* add ja_leaderboard tag

* edit README.md

* update README.md

* add credit + minor changes

* run ruff format

* address review comments + add group

* remove aggregate_metric_list

* remove tags

* update tasks/README.md