feat(web_server.py): add WEB_SERVER and BACKEND app.configs

src/judas_server/web/web_server.py

@@ -28,6 +28,9 @@ class JudasWebServer:
         )
         self.app.secret_key = secret_key
 
+        self.app.config["WEB_SERVER"] = self
+        self.app.config["BACKEND"] = self.backend
+
         # hard-code password
         self.app.config["PASSWORD"] = "123"