add source code and readme

manifests/infrastructure/postgresql/kustomization.yaml

@@ -0,0 +1,18 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- namespace.yaml
+- repository.yaml
+- operator.yaml
+- postgresql-storageclass.yaml
+- cert-manager-certificates.yaml
+- cilium-cnpg-policies.yaml
+- cluster-shared.yaml
+- backup-config.yaml
+- postgresql-s3-backup-secret.yaml
+# - scheduled-backups.yaml  # Removed - was using barmanObjectStore method
+- postgresql-dashboard-metrics.yaml
+- postgresql-dashboard-rbac.yaml
+- postgresql-connection-metrics.yaml
+- postgresql-service-alias.yaml