Statistics for list feature (#2453)
* add distribution for list/Sequence type columns
* add Sequence type
* refactor
* make stats worker triggered by `"config-parquet-metadata"`
* fix case when all column is nan
* add decorator to always include column_name in error messages + test
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Co-authored-by: Sylvain Lesage <sylvain.lesage@huggingface.co>
