*: define prometheus metrics in apps to prevent re-import

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/admin/api/workers.py

@@ -1,7 +1,6 @@
 """authentik administration overview"""
 from django.conf import settings
 from drf_spectacular.utils import extend_schema, inline_serializer
-from prometheus_client import Gauge
 from rest_framework.fields import IntegerField
 from rest_framework.permissions import IsAdminUser
 from rest_framework.request import Request
@@ -10,8 +9,6 @@ from rest_framework.views import APIView
 
 from authentik.root.celery import CELERY_APP
 
-GAUGE_WORKERS = Gauge("authentik_admin_workers", "Currently connected workers")
-
 
 class WorkerView(APIView):
     """Get currently connected worker count."""