worker: add option to track unmanaged file descriptors

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).

worker: add option to track unmanaged file descriptors

Add a public option for Workers which adds tracking for raw file descriptors, as currently, those resources are not cleaned up, unlike e.g. FileHandles.

@nodejs/workers

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines