src: add option to track unmanaged file descriptors

Add the ability to track “raw” file descriptors, i.e. integers returned
by `fs.open()`, and close them on `Environment` shutdown, to match the
behavior for all other resource types (which are also closed on
shutdown).

PR-URL: https://github.com/nodejs/node/pull/34303


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>