feat: improve mouse input handling

Minecraft.Client/stdafx.h

@@ -66,6 +66,7 @@ typedef unsigned __int64 __uint64;
 #define WIN32_LEAN_AND_MEAN             // Exclude rarely-used stuff from Windows headers
 // Windows Header Files:
 #include <windows.h>
+#include <windowsx.h>
 #include <malloc.h>
 #include <tchar.h>
 // TODO: reference additional headers your program requires here