Add PyTorch test file (#720)

test/models.json

@@ -5767,6 +5767,13 @@
     "format":   "TorchScript v1.6",
     "link":     "https://github.com/lutzroeder/netron/issues/728"
   },
+  {
+    "type":     "pytorch",
+    "target":   "vicuna-7b.zip",
+    "source":   "https://github.com/lutzroeder/netron/files/13935467/vicuna-7b.zip",
+    "format":   "PyTorch v1.6",
+    "link":     "https://github.com/lutzroeder/netron/issues/720"
+  },
   {
     "type":     "pytorch",
     "target":   "ViT-B-32.pt",