Add inference endpoint feature.

handler.py

@@ -87,7 +87,7 @@ else:
 
 
 class EndpointHandler():
-    def __init__(self):
+    def __init__(self, path=''):
         self.birefnet = AutoModelForImageSegmentation.from_pretrained(
             '/'.join(('zhengpeng7', usage_to_weights_file[usage])), trust_remote_code=True
         )