Audit when a service is archived ("deleted")

This is similar to the previous commit. I've used the term 'archive'
to match the rest of the code - services aren't ever truly deleted.

tests/app/test_event_handlers.py

@@ -3,6 +3,7 @@ from unittest.mock import ANY
 
 from app.event_handlers import (
     create_add_user_to_service_event,
+    create_archive_service_event,
     create_archive_user_event,
     create_broadcast_account_type_change_event,
     create_email_change_event,
@@ -152,3 +153,21 @@ def test_suspend_service(client, mock_events):
          'service_id': service_id,
          'suspended_by_id': suspended_by_id},
     )
+
+
+def test_archive_service(client, mock_events):
+    service_id = str(uuid.uuid4())
+    archived_by_id = str(uuid.uuid4())
+
+    create_archive_service_event(
+        service_id,
+        archived_by_id,
+    )
+
+    mock_events.assert_called_with(
+        'archive_service',
+        {'browser_fingerprint': {'browser': ANY, 'version': ANY, 'platform': ANY, 'user_agent_string': ''},
+         'ip_address': ANY,
+         'service_id': service_id,
+         'archived_by_id': archived_by_id},
+    )