add guest invitation read & valide with route

tests/Feature/EventsTest.php

@@ -738,9 +738,10 @@ class EventsTest extends TestCase
         ]);
     }
 
-    // an_invitation_mail_is_seed_to_new_guest
+    // todo an_invitation_mail_is_seed_to_new_guest
+    // https://laravel.com/docs/5.8/mocking#mail-fake
 
-    // a_guest_can_confirm_participation_in_mail
+    // todo a_guest_can_confirm_participation_in_mail
 
     private function data()
     {