FEAT: how xorbits datastes export to json file

[simplew2011]

Is your feature request related to a problem? Please describe

• how xorbits datastes export to json file
• in current, only support to arrow format file

Describe the solution you'd like

• Add an interface for converting to the huggingface dataset
• Or add an interface for export xorbits dataset to json format

[simplew2011]

需要实现如下接口
xorbits.datasets.to_huggingface
xorbits.datasets.Dataset.from_dataframe
xorbits.datasets.export_json

[simplew2011]

需要向dataset.Dataset中新增一列用于记录中间值，如何处理，只看到__getitem__，没有实现__setitem__

[simplew2011]

dataset.Dataset如何进行过滤，

类似于huggingface.dataset：https://github.com/huggingface/datasets/blob/ef0f986518bd252c5314a7e3a419dedcbb166630/src/datasets/arrow_dataset.py#L5061

[qinxuye]

@codingl2k1 看下这个问题。

@simplew2011 你有兴趣来贡献吗？

[codingl2k1]

dataset.Dataset如何进行过滤，

类似于huggingface.dataset：https://github.com/huggingface/datasets/blob/ef0f986518bd252c5314a7e3a419dedcbb166630/src/datasets/arrow_dataset.py#L5061

Currently, xorbits dataframe can export the dataframe to csv, parquet, sql, and dataframe apply may be able to meet your needs. xorbits dataset can map data and convert the dataset to dataframe, but the filter is not implemented.

Could you provide some example code?