Add OpenSSL 3.0 support

[jasonacox]

Closes #62

[jasonacox]

Build successful:

OPENSSL="3.0.9"		# https://www.openssl.org/source/ 
LIBCURL="8.1.2"		# https://curl.haxx.se/download.html
NGHTTP2="1.55.1"	# https://nghttp2.org/

  cURL
curl 8.1.2 (x86_64-apple-darwin) libcurl/8.1.2 OpenSSL/3.0.9 zlib/1.2.11 brotli/1.0.9 zstd/1.5.5 libidn2/2.3.4 nghttp2/1.55.1
Release-Date: 2023-05-30
Protocols: dict file ftp ftps gopher gophers http https imap imaps ldap ldaps mqtt pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
Features: alt-svc AsynchDNS brotli HSTS HTTP2 HTTPS-proxy IDN IPv6 Largefile libz NTLM NTLM_WB SSL threadsafe TLS-SRP UnixSockets zstd

  OpenSSL
OpenSSL 3.0.9 30 May 2023 (Library: OpenSSL 3.0.9 30 May 2023)
Mon Jul 17 21:19:29 2023 - End

iOS Test Build Success

Mac Catalyst Build Success

[jasonacox]

Build Test Results:

• Base Build build.sh
  • MacOS Apple Silicon Build - M1 - SUCCESS
  • MacOS Intel - Core i7 - SUCCESS
• Mac Catalyst build.sh -m
  • MacOS Apple Silicon Build - M1 - SUCCESS
  • MacOS Intel - Core i7 - SUCCESS
• SSLv3 + Catalyst build.sh -3 -m
  • MacOS Apple Silicon Build - M1 - SUCCESS
  • MacOS Intel - Core i7 - FAIL (MacOS Big Sur) -
  • tls/openssl.c:3467:18: error: implicit declaration of function 'SSLv3_client_method' is invalid in C99 [-Werror,-Wimplicit-function-declaration]

[jasonacox]

Issue: When using the libraries built on a system that as a dynamic linked library for libidn2 (e.g. caused by brew install wget dependencies for example), the resulting framework will error when deploying to iOS targets (since the lib is not there).

Possible solutions:

• On build host add --without-libidn2 to curl build configuration call.
• Remove libidn2 via brew uninstall --ignore-dependencies libidn2

Updating libcurl-build.sh to disable libidn2.