fix: setup func

setup.py

@@ -13,6 +13,12 @@ def download_manga_line_extraction_model():
     if os.path.exists("./models/erika.pth"):
         return
 
+    with requests.get(MANGA_LINE_EXTRACTION_MODEL, stream=True) as r:
+        r.raise_for_status()
+        with open("./models/erika.pth", "wb") as f:
+            for chunk in r.iter_content(chunk_size=8192):
+                f.write(chunk)
+
 
 def download_anime2sketch_model():
     if os.path.exists("./models/netG.pth"):