update README.md

Adjusted the data directory structure

update dataset card desc

add leaderboard train data

update leaderboard test data overview

Update README.md

change leaderboard test file's format

Update README.md

add leaderboard test file

update instructions of v0.2

update README.md, add v0.2 info

Add NDD v0.2 data

readme's update

Delete the configs for dataset viewer

Modify the task_categories name into the official list

Add datasets-cards in README.md, delete license_name

Add datasets-cards in README.md

First-time data synchronization of GitHub directory and data

initial commit