Export function instead of its returned value

[m-kusnierz]

This package doesn't work correctly together with Opentelemetry packages.

Changes:

Exported function in lib/nodeerrors.js instead of exporting value returned by the function to avoid caching the value (so the errors definitions)

It uses update moduleconfig that accepts a directory that should be checked for config, because it was also being cached by opentelemetry package (so it was always looking for the config in the same directory).

Used parent-module because of module.parent deprecation nodejs/node#32217

Depends on ebdrup/moduleconfig#6

[m-kusnierz]

This will be updated after releasing changes from ebdrup/moduleconfig#6

[m-kusnierz]

I'm closing this PR as we decided to implement these changes in forked repository for now.