Add SDL_SaveFile and SDL_SaveFile_IO functions

src/dynapi/SDL_dynapi.sym

@@ -1184,6 +1184,8 @@ SDL3_0.0.0 {
     SDL_RenderDebugText;
     SDL_GetSandbox;
     SDL_CancelGPUCommandBuffer;
+    SDL_SaveFile_IO;
+    SDL_SaveFile;
     # extra symbols go here (don't modify this line)
   local: *;
 };

src/dynapi/SDL_dynapi_overrides.h

@@ -1209,3 +1209,5 @@
 #define SDL_RenderDebugText SDL_RenderDebugText_REAL
 #define SDL_GetSandbox SDL_GetSandbox_REAL
 #define SDL_CancelGPUCommandBuffer SDL_CancelGPUCommandBuffer_REAL
+#define SDL_SaveFile_IO SDL_SaveFile_IO_REAL
+#define SDL_SaveFile SDL_SaveFile_REAL

src/dynapi/SDL_dynapi_procs.h

@@ -1215,3 +1215,5 @@ SDL_DYNAPI_PROC(SDL_LogOutputFunction,SDL_GetDefaultLogOutputFunction,(void),(),
 SDL_DYNAPI_PROC(bool,SDL_RenderDebugText,(SDL_Renderer *a,float b,float c,const char *d),(a,b,c,d),return)
 SDL_DYNAPI_PROC(SDL_Sandbox,SDL_GetSandbox,(void),(),return)
 SDL_DYNAPI_PROC(bool,SDL_CancelGPUCommandBuffer,(SDL_GPUCommandBuffer *a),(a),return)
+SDL_DYNAPI_PROC(bool,SDL_SaveFile_IO,(SDL_IOStream *a,const void *b,size_t c,bool d),(a,b,c,d),return)
+SDL_DYNAPI_PROC(bool,SDL_SaveFile,(const char *a,const void *b,size_t c),(a,b,c),return)