Update __init__.py

Author: Nolan-149

ppsci/arch/__init__.py

@@ -62,6 +62,8 @@
 from ppsci.arch.regdgcnn import RegDGCNN  # isort:skip
 from ppsci.arch.regpointnet import RegPointNet  # isort:skip
 from ppsci.arch.ifm_mlp import IFMMLP  # isort:skip
+from ppsci.arch.resnet import resnet  # isort:skip
+
 
 __all__ = [
     "MoFlowNet",
@@ -112,6 +114,7 @@
     "VelocityGenerator",
     "RegDGCNN",
     "RegPointNet",
+    "resnet",
     "IFMMLP",
 ]