feat: Add dedicated kustomization for NodePool manifests

- Create karpenter-nodepools-kustomization.yaml for GitOps deployment
- Uses karpenter GitRepository (start-io branch) instead of failing flux-system
- Targets ./manifests directory containing kafka-pool, production-pool, default-pool
- Enables proper deployment of NodePool disruption disable configurations
- Completes GitOps chain for final 429 rate limiting elimination

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

Co-Authored-By: Claude <noreply@anthropic.com>

Author: haimari

karpenter-nodepools-kustomization.yaml

@@ -0,0 +1,15 @@
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: karpenter-nodepools
+  namespace: flux-system
+spec:
+  interval: 5m
+  path: ./manifests
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: karpenter
+    namespace: flux-system
+  targetNamespace: karpenter
+  timeout: 2m