SDL: cmake: Add the IoRing async i/o code to the Windows build.

SDL Commits
1 
From 05877f2ceaefa03e12e769f986fca77b17313423 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Thu, 16 Jan 2025 00:59:31 -0500
Subject: [PATCH] cmake: Add the IoRing async i/o code to the Windows build.

The Visual Studio projects have been compiling this for awhile, but apparently
we haven't tested this through CMake before. Toolchains without access to
the latest Windows 11 SDK headers have been preprocessing out the dependency
on this code, so we never noticed.
---
 CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index eb4fc9574102d..a2b2bc9b5b51e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1889,6 +1889,7 @@ elseif(WINDOWS)
 
   sdl_glob_sources("${SDL3_SOURCE_DIR}/src/core/windows/*.c")
   sdl_glob_sources("${SDL3_SOURCE_DIR}/src/main/windows/*.c")
+  sdl_glob_sources("${SDL3_SOURCE_DIR}/src/io/windows/*.c")
 
   if(TARGET SDL3-shared AND MSVC AND NOT SDL_LIBC)
     # Prevent codegen that would use the VC runtime libraries.