required files on RefCOCO are missed

[dami23]

@sanjayss34 @authors thank you for the code sharing. I downloaded the preprocessed data files via gsutil cp gs://reclip-sanjays/reclip_data.tar.gz, but the refcoco_train.jsonl， refcoco_train_gt_boxes10100.pt, and refcoco_val_det_boxes10100.pt are missed. RefCOCO shares these files with RefCOCO+? could you please give a simple introduction about the files generation? Sincerely thank you for your help!!