feat: added new output

Author: owlleg6

outputs.tf

@@ -8,6 +8,11 @@ output "name" {
   description = "Private DNS Zone Name"
 }
 
+output "resource_group" {
+  value       = var.create_private_zone == true ? azurerm_private_dns_zone.this[0].resource_group_name : ""
+  description = "Private DNS Zone Resource Group"
+}
+
 output "link_id" {
   value       = var.vnet_map == {} ? [] : [for vnet_link in azurerm_private_dns_zone_virtual_network_link.this : vnet_link.id]
   description = "List of Virtual Network Link Ids"