Restructure the zlib.gyp file based on the upstream gn file, breaking
out the files with optimizations that need additional compiler flags.
Use a copy of the GN-scraper.py script to reduce the amount of hand
editing when the zlib dependency is updated.
PR-URL: https://github.com/nodejs/node/pull/45589
Fixes: https://github.com/nodejs/node/issues/32856
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
