Added SDL_RenderTextureAffine() to the exported API

src/dynapi/SDL_dynapi.sym

@@ -1204,6 +1204,7 @@ SDL3_0.0.0 {
     SDL_IsMainThread;
     SDL_RunOnMainThread;
     SDL_SetGPUAllowedFramesInFlight;
+    SDL_RenderTextureAffine;
     # extra symbols go here (don't modify this line)
   local: *;
 };

src/dynapi/SDL_dynapi_overrides.h

@@ -1229,3 +1229,4 @@
 #define SDL_IsMainThread SDL_IsMainThread_REAL
 #define SDL_RunOnMainThread SDL_RunOnMainThread_REAL
 #define SDL_SetGPUAllowedFramesInFlight SDL_SetGPUAllowedFramesInFlight_REAL
+#define SDL_RenderTextureAffine SDL_RenderTextureAffine_REAL

src/dynapi/SDL_dynapi_procs.h

@@ -1235,3 +1235,4 @@ SDL_DYNAPI_PROC(void,SDL_ShowFileDialogWithProperties,(SDL_FileDialogType a, SDL
 SDL_DYNAPI_PROC(bool,SDL_IsMainThread,(void),(),return)
 SDL_DYNAPI_PROC(bool,SDL_RunOnMainThread,(SDL_MainThreadCallback a,void *b,bool c),(a,b,c),return)
 SDL_DYNAPI_PROC(bool,SDL_SetGPUAllowedFramesInFlight,(SDL_GPUDevice *a,Uint32 b),(a,b),return)
+SDL_DYNAPI_PROC(bool,SDL_RenderTextureAffine,(SDL_Renderer *a,SDL_Texture *b,const SDL_FRect *c,const SDL_FPoint *d,const SDL_FPoint *e,const SDL_FPoint *f),(a,b,c,d,e,f),return)