tools: include exit code in TAP log

PR-URL: https://github.com/nodejs/node/pull/19855


Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Rod Vagg <rod@vagg.org>