Add support for macOS connectx? (Used by Objective-C API's in many GUI applications)

The Objective-C API's on macOS don't use the connect function under the hood, instead they use connectx which according to the man page is like a combination of bind and connect.

The parameter socket is a socket. In general, connectx() may be used as a substitute for cases when bind(2) and connect(2) are issued in succession, as well as a mechanism to transmit data at connection establishment time.

Since this function doesn't appear to be hooked, code that uses these API's bypass proxychains completely.

Here's a sample program that demonstrates the issue:

// clang -framework Foundation main.m -o main

#import <Foundation/Foundation.h>
#include <unistd.h>

int done = 0;

int main(int argc, const char * argv[]) {
	@autoreleasepool {
		NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
		[request setHTTPMethod:@"GET"];
		[request setURL:[NSURL URLWithString:@"http://icanhazip.com/"]];
		[
			[
				[NSURLSession sharedSession]
				dataTaskWithRequest:request
				completionHandler:^(
					NSData * _Nullable data,
					NSURLResponse * _Nullable response,
					NSError * _Nullable error
				) {
					NSString *myString = [
						[NSString alloc]
						initWithData:data
						encoding:NSUTF8StringEncoding
					];
					NSLog(@"Data received: %@", myString);
					done = 1;
				}
			]
			resume
		];
	}
	while (!done) {
		usleep(1);
	}
	return 0;
}

Support for connectx would greatly improve compatibility with macOS software.

Start by compiling and running the Objective-C sample in main.m, then compare its connectx behavior with the repository's existing socket-call hooks and the macOS connectx documentation. Done means connectx-based macOS traffic no longer bypasses proxychains, with the sample providing a reproducible check.