Added more namespace and installed argocd via helm

kubernetes/namespaces.tf

@@ -3,3 +3,15 @@ resource "kubernetes_namespace" "argocd" {
     name = "argocd"
   }
 }
+
+resource "kubernetes_namespace" "applications" {
+  metadata {
+    name = "applications"
+  }
+}
+
+resource "kubernetes_namespace" "persistence" {
+  metadata {
+    name = "persistence"
+  }
+}