Support parquet datasets with >10k files
By respecting the 10k files limit per folder when copying them in `refs/convert/parquet` .

To do so I'm using a directory scheme like config/train-part0/0000.parquet up to config/train-part9/9999.parquet when there are >10k files

Close https://github.com/huggingface/datasets-server/issues/2498

cc @guipenedo 
Support parquet datasets with >10k files: By respecting the 10k files limit per folder when copying them in `refs/convert/parquet` .

To do so I'm using a directory scheme like config/train-part0/0000.parquet up to config/train-part9/9999.parquet when there are >10k files

Close https://github.com/huggingface/datasets-server/issues/2498

cc @guipenedo 