feat: deploy paperclip to au-syd1 via ArgoCD (aitooling project)

Adds base manifests and au-syd1 overlay for Paperclip (AI agent
orchestration platform), following the litellm deployment pattern.
Updates aitooling ApplicationSet to include the paperclip path.

Closes #99

apps/base/paperclip/namespace.yaml

@@ -0,0 +1,5 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: paperclip