Re-add mailu

apps/templates/mailu-folder.yaml

@@ -0,0 +1,19 @@
+# apiVersion: argoproj.io/v1alpha1
+# kind: Application
+# metadata:
+#   name: mailu-folder
+# spec:
+#   project: default
+#   source:
+#     repoURL: https://github.com/rubenhensen/k8scd.git
+#     targetRevision: HEAD
+#     path: mailu
+#   destination:
+#     server: https://kubernetes.default.svc
+#     namespace: mailu
+#   syncPolicy:
+#     syncOptions:
+#     - CreateNamespace=true
+#     automated:
+#       selfHeal: true
+#       prune: true