feat: tokenization start, waitlist for background task graceful exit

projects/greenlight/docs/api/greenlight-bruno/Users/Create User.yml

@@ -11,7 +11,7 @@ http:
     data: |-
       {
         "name": "Carol 3",
-        "email": "carol3@example.com",
+        "email": "carol5@example.com",
         "password": "pa55word"
       }
   auth: inherit