zlib: generate error code names in C++

This makes it easier to implement the lookup in a way that targets
error codes from a specific compression library, as a way towards
supporting multiple ones (e.g. brotli).

PR-URL: https://github.com/nodejs/node/pull/23413


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>