Add Velero configuration files and update production kustomization

apps/prod/velero/release.yaml

@@ -0,0 +1,19 @@
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: velero
+  namespace: velero
+spec:
+  interval: 1h
+  chart:
+    spec:
+      chart: velero
+      version: 10.1.0
+      sourceRef:
+        kind: HelmRepository
+        name: velero-helm-repo
+        namespace: velero
+  valuesFrom:
+    - kind: ConfigMap
+      name: velero-prod-values
+      valuesKey: values.yaml