Ping-Service should use a timeout

[0x483d]

By default, the Ping-Service uses fetch to get the status of the target web application

      this.fetch("/", { method, cache: "no-cache" }, false)
        .then(() => {
          this.status = "online";
        })
        .catch(() => {
          this.status = "offline";
        });

If a web application is offline, and there is no response, fetch waits a few seconds until it times out.
Until there was no timeout, the web application will not be marked as offline.

Is it possible to add a "timeout" option (in addition to the already existing method option) to set the timeout to a given value.
By setting it for example to 500ms, the web application would be marked as "offline" much faster.