Fixes #19806: Introduce JobFailed exception to allow marking background jobs as failed (#19807)

netbox/core/exceptions.py

@@ -1,9 +1,19 @@
 from django.core.exceptions import ImproperlyConfigured
 
-
-class SyncError(Exception):
-    pass
+__all__ = (
+    'IncompatiblePluginError',
+    'JobFailed',
+    'SyncError',
+)
 
 
 class IncompatiblePluginError(ImproperlyConfigured):
     pass
+
+
+class JobFailed(Exception):
+    pass
+
+
+class SyncError(Exception):
+    pass