LibCore: Do not include SocketAddressWindows.h in System.h

SocketAddressWindows.h contains (re)definitions of a bunch of system-
level types. This leads to a bunch of conflicts when trying to include
proper Windows headers in SystemWindows.cpp. This patch removes this
inclusion and just forward-declares the couple of types we need.

Libraries/LibCore/System.h

@@ -32,15 +32,20 @@
 #    include <termios.h>
 #    include <utime.h>
 #else
-#    include "SocketAddressWindows.h"
 #    include <io.h>
+
 #    define O_CLOEXEC O_NOINHERIT
 #    define STDIN_FILENO _get_osfhandle(_fileno(stdin))
 #    define STDOUT_FILENO _get_osfhandle(_fileno(stdout))
 #    define STDERR_FILENO _get_osfhandle(_fileno(stderr))
 #    define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
 #    define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
+
 using sighandler_t = void (*)(int);
+using socklen_t = int;
+
+struct addrinfo;
+struct sockaddr;
 #endif
 
 #if !defined(AK_OS_BSD_GENERIC) && !defined(AK_OS_ANDROID) && !defined(AK_OS_WINDOWS)

Libraries/LibCore/SystemWindows.cpp

@@ -13,6 +13,7 @@
 #include <AK/ByteString.h>
 #include <AK/ScopeGuard.h>
 #include <LibCore/Process.h>
+#include <LibCore/SocketAddress.h>
 #include <LibCore/System.h>
 #include <direct.h>
 #include <sys/mman.h>

Libraries/LibWebView/EventLoop/EventLoopImplementationQt.cpp

@@ -11,6 +11,7 @@
 #include <LibCore/Event.h>
 #include <LibCore/EventReceiver.h>
 #include <LibCore/Notifier.h>
+#include <LibCore/SocketAddress.h>
 #include <LibCore/System.h>
 #include <LibCore/ThreadEventQueue.h>
 #include <LibThreading/Mutex.h>

Services/RequestServer/RequestPipe.cpp

@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibCore/SocketAddress.h>
 #include <LibCore/System.h>
 #include <RequestServer/RequestPipe.h>