[MM-30539] New renewal link logic (#16539)

* New renewal link logic

Endpoint and logic that returns the renewal link to be used to start the
license renewal process.

* Limit access for restricted sysadmins

* Include active users in the renewal token

tests/test-config.json

@@ -404,4 +404,4 @@
         "CustomUrlSchemes": [],
         "ExperimentalTimezone": false
     }
-}
+}