Add initial visual studio project files and fix the win32 build

Win32 has been rotting for a while. This patch adds vs17 build files
as well as fixing up all build errors that have accumulated.
There are still build warnings but those can be addressed in a followup
patch.

Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>

lib/pdu.c

@@ -27,8 +27,17 @@
 #include <arpa/inet.h>
 #endif
 
+#ifdef HAVE_INTTYPES_H
+#include <inttypes.h>
+#else
+#define PRIu64 "llu"
+#define PRIx32 "x"
+#endif
+
 #if defined(WIN32)
 #include <winsock2.h>
+#include <ws2tcpip.h>
+#include "win32/win32_compat.h"
 #else
 #include <strings.h>
 #endif
@@ -36,7 +45,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <inttypes.h>
 #include "iscsi.h"
 #include "iscsi-private.h"
 #include "scsi-lowlevel.h"