src: add PrintLibuvHandleInformation debug helper

This function is not only helpful for debugging crashes,
but can also be used as an ad-hoc debugging statement.

PR-URL: https://github.com/nodejs/node/pull/25905


Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>