Added placeholder scripting

Frontend/assets/scripts/tools/mock/datatransfer.js

@@ -40,6 +40,12 @@ $('#btn-newRow').click(
     }   
     );
 
+$('#btn-copy').click(
+    ()=> {
+        console.log("btn-copy");
+    }   
+    );
+
 /*
     Functions segment
 */
@@ -145,9 +151,11 @@ function loadFetchedMessage(){
 }
 
 function fillStaticFields(uuid, contentType, body, httpStatus){
+    const copyButton = '<button id="btn-copy" class="invisible-button">Copy</button>';
     let link = createLink(uuid);
-    let linkHtml = '<a class="hyperlink" target="_blank" href="'+link+'">'+link+'</a>';
-    $('#messageLink').html(linkHtml);
+    let linkHtml = '<a class="hyperlink" target="_blank" href="'+link+'">'+link+'</a>' + copyButton;
+    $('#messageLink').attr("href", link);
+    $('#messageLink').html(link);
     $('#httpStatus').val(httpStatus);
     $('#typeSelector').val(contentType);
     $('#bodyEditor').val(body);