Add owner field to new-workloads manifest file

Adds 'owner': 'new-workloads' field to gpu integration manifest.json file for IDP-800.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: davidfeng-datadog

gpu/manifest.json

@@ -2,6 +2,7 @@
   "manifest_version": "2.0.0",
   "app_uuid": "1f730d2a-144d-43bc-aec3-9cf274ba8d73",
   "app_id": "gpu",
+  "owner": "new-workloads",
   "display_on_public_website": false,
   "tile": {
     "overview": "README.md#Overview",