feat!: Move networking apps into kube-system namespace

Signed-off-by: Devin Buhl <devin@buhl.casa>

cluster/apps/kube-system/cloudflare-ddns/kustomization.yaml

@@ -0,0 +1,15 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - cron-job.yaml
+  - secret.sops.yaml
+namespace: kube-system
+configMapGenerator:
+  - name: cloudflare-ddns
+    files:
+      - cloudflare-ddns.sh
+generatorOptions:
+  disableNameSuffixHash: true
+  annotations:
+    kustomize.toolkit.fluxcd.io/substitute: disabled