Add hubconf for torchhub

hubconf.py

+import torch
+from model import Generator
+
+
+def animegan2(pretrained=True, device="cpu", progress=True, check_hash=True):
+    model = Generator()
+    if type(pretrained) == str:
+        ckpt_url = pretrained
+        pretrained = True
+    else:
+        ckpt_url = "https://github.com/xhlulu/animegan2-pytorch/releases/download/weights/face_paint_512_v2_0.pt"
+
+    if pretrained is True:
+        state_dict = torch.hub.load_state_dict_from_url(
+            ckpt_url,
+            map_location=torch.device(device),
+            progress=progress,
+            check_hash=check_hash,
+        )
+        model.load_state_dict(state_dict)