[Feature] 添加signals 解耦代码

apps/assets/apps.py

@@ -5,3 +5,8 @@ from django.apps import AppConfig
 
 class AssetsConfig(AppConfig):
     name = 'assets'
+
+    def ready(self):
+        from .signals import on_app_ready
+        on_app_ready.send(self.__class__)
+        super().ready()