feat(k8s/external): add Home Assistant external routing via Traefik

kubernetes/app/external/ks.yaml

@@ -0,0 +1,17 @@
+---
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: external-vars
+  namespace: flux-system
+spec:
+  interval: 10m
+  path: ./kubernetes/app/external/vars
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: flux-system
+  decryption:
+    provider: sops
+    secretRef:
+      name: sops-age