add the ability to clone a template

lib/templates/clone_attachments.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+module Templates
+  module CloneAttachments
+    module_function
+
+    def call(template:, original_template:)
+      original_template.documents.each do |document|
+        new_document = ActiveStorage::Attachment.create!(
+          uuid: document.uuid,
+          blob_id: document.blob_id,
+          name: 'documents',
+          record: template
+        )
+
+        document.preview_images_attachments.each do |preview_image|
+          ActiveStorage::Attachment.create!(
+            uuid: preview_image.uuid,
+            blob_id: preview_image.blob_id,
+            name: 'preview_images',
+            record: new_document
+          )
+        end
+      end
+    end
+  end
+end