add helm release and repo for sealed secrets

cluster/helm/sealed-secrets/sealed-secrets-release.yaml

@@ -0,0 +1,22 @@
+---
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: sealed-secrets
+  namespace: flux-system
+spec:
+  chart:
+    spec:
+      chart: sealed-secrets
+      reconcileStrategy: ChartVersion
+      sourceRef:
+        kind: HelmRepository
+        name: sealed-secrets
+      version: '>=1.15.0-0'
+  install:
+    crds: Create
+  interval: 1h0m0s
+  releaseName: sealed-secrets
+  targetNamespace: flux-system
+  upgrade:
+    crds: CreateReplace

cluster/helm/sealed-secrets/sealed-secrets-repo.yml

@@ -0,0 +1,9 @@
+---
+apiVersion: source.toolkit.fluxcd.io/v1
+kind: HelmRepository
+metadata:
+  name: sealed-secrets
+  namespace: flux-system
+spec:
+  interval: 1h0m0s
+  url: https://bitnami-labs.github.io/sealed-secrets