refactor: reorganize kustomizations

cluster/core/kube-system/kubernetes-replicator/helm-release.yaml

@@ -0,0 +1,20 @@
+---
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: kubernetes-replicator
+  namespace: kube-system
+spec:
+  interval: 5m
+  chart:
+    spec:
+      # renovate: registryUrl=https://helm.mittwald.de/
+      chart: kubernetes-replicator
+      version: 2.6.3
+      sourceRef:
+        kind: HelmRepository
+        name: mittwald-charts
+        namespace: flux-system
+      interval: 5m
+  values:
+    grantClusterAdminto: true

cluster/core/kube-system/kubernetes-replicator/kustomization.yaml

@@ -0,0 +1,4 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - helm-release.yaml