Add support for billing budgets to project factory (#2112)

* align factory variable name in project factory module

* tested

* align fast stage

modules/project-factory/main.tf

@@ -76,3 +76,13 @@ module "service-accounts" {
     (module.projects[each.value.project].project_id) = each.value.iam_project_roles
   }
 }
+
+module "billing-account" {
+  source = "../billing-account"
+  count  = var.factories_config.budgets == null ? 0 : 1
+  id     = var.factories_config.budgets.billing_account
+  budget_notification_channels = (
+    var.factories_config.budgets.notification_channels
+  )
+  budgets = local.budgets
+}