Add PP-HGNet and PP-HGNetv2 models

Author: seefun

timm/models/__init__.py

@@ -25,6 +25,7 @@
 from .gcvit import *
 from .ghostnet import *
 from .hardcorenas import *
+from .hgnet import *
 from .hrnet import *
 from .inception_next import *
 from .inception_resnet_v2 import *