Add postgresql provider

output.tf

@@ -14,6 +14,17 @@ output "hosts" {
   }
 }
 
+output "postgresql_service_roles" {
+  value = postgresql_role.service_roles
+  sensitive = true
+}
+
+output "postgresql" {
+  value = {
+    "host" = var.postgresql_host
+    "port" = var.postgresql_port
+  }
+}
 
 output "scaleway_service_keys" {
   value       = scaleway_iam_api_key.service_keys