Add YOLOv5 dataset yamls (#207)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

ultralytics/nn/autobackend.py

@@ -227,7 +227,7 @@ class AutoBackend(nn.Module):
         if 'names' not in locals():
             names = yaml_load(data)['names'] if data else {i: f'class{i}' for i in range(999)}
         if names[0] == 'n01440764' and len(names) == 1000:  # ImageNet
-            names = yaml_load(ROOT / 'data/ImageNet.yaml')['names']  # human-readable names
+            names = yaml_load(ROOT / 'yolo/data/datasets/ImageNet.yaml')['names']  # human-readable names
 
         self.__dict__.update(locals())  # assign all variables to self