added toggle for vae tiling, use custom memory buffer

expose.h

@@ -149,6 +149,7 @@ struct sd_load_model_inputs
     const int threads = 0;
     const int quant = 0;
     const bool taesd = false;
+    const bool notile = false;
     const char * t5xxl_filename = nullptr;
     const char * clipl_filename = nullptr;
     const char * clipg_filename = nullptr;