Add api key to response from register

quovadis/quovadis.php

@@ -203,7 +203,7 @@ $leaf->post('/register', function () use($leaf) {
     // Email API key
     email_api_key($username, $api_key);
     
-    $leaf->response->json(["message" => $username." has been added and email sent"],200);
+    $leaf->response->json(["message" => "API key ".$api_key. " for " .$username." has been added and email sent"],200);
 });
 
 $leaf->post('/update-api-key', function () use($leaf) {