Rudimentary support for IPv6 in server socket creation

I haven't completely implemented it yet, but I did come up with a basic algorithm
to convert the IPv6 address into a 'code' form. I still have to write the code to
actually create the socket, though.

check_input.cpp

@@ -30,7 +30,7 @@ GameType check_server(char* ip_text, char* port_text) {
 	std::string code = connect_code::encode(addr, std::to_string(port));
 
 	/* Create server socket and wait for client to connect */
-	Server* server = new Server(4, ES_UDP, addr.data(), port);
+	Server* server = new Server(check_ip_ver(addr.data()), ES_UDP, addr.data(), port);
 	server->create_socket();
 	display_text_centered("Your code is " + code + "\nWaiting for connection...");
 	std::string response = "";