Update croissant_rai_OpenWhistle-Classification-Finetuning.json

Document SNR column in Croissant metadata

Add SNR column to all review sample

Document SNR column for all classification subset

Add SNR column to all classification subset

Create croissant_rai_OpenWhistle-Classification-Finetuning.json

Update README.md

Add files using upload-large-folder tool

initial commit