io: Renamed src/file to src/io

Fixes #11980.

src/SDL.c

@@ -55,7 +55,7 @@
 #include "video/SDL_surface_c.h"
 #include "video/SDL_video_c.h"
 #include "filesystem/SDL_filesystem_c.h"
-#include "file/SDL_asyncio_c.h"
+#include "io/SDL_asyncio_c.h"
 #ifdef SDL_PLATFORM_ANDROID
 #include "core/android/SDL_android.h"
 #endif

src/process/posix/SDL_posixprocess.c

@@ -34,7 +34,7 @@
 #include <sys/wait.h>
 
 #include "../SDL_sysprocess.h"
-#include "../../file/SDL_iostream_c.h"
+#include "../../io/SDL_iostream_c.h"
 
 
 #define READ_END 0

src/process/windows/SDL_windowsprocess.c

@@ -24,7 +24,7 @@
 
 #include "../../core/windows/SDL_windows.h"
 #include "../SDL_sysprocess.h"
-#include "../../file/SDL_iostream_c.h"
+#include "../../io/SDL_iostream_c.h"
 
 #define READ_END 0
 #define WRITE_END 1