fix: align websocket app configuration

apps/ws/apps.py

@@ -3,4 +3,4 @@ from django.apps import AppConfig
 
 class WsConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
-    name = 'ws'
+    name = 'apps.ws'

server/settings.py

@@ -58,7 +58,8 @@ INSTALLED_APPS = [
     'apps.system',
     'apps.auth1',
     'apps.wf',
-    'apps.ops'
+    'apps.ops',
+    'apps.ws',
 ]
 
 MIDDLEWARE = [