deps: use nghttp2's config.h on all platforms

Fix warnings about use of htonl(), etc. by including config.h for all
platforms, defining HAVE_ARPA_INET_H on non-Windows, and therefore
including <arpa/inet.h>, which defines the host to network byte order
conversion functions.

PR-URL: https://github.com/nodejs/node/pull/27283


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>