iOS fixes for direct FFI

ios/include/PolyvoxFilamentFFIApi.h

@@ -80,4 +80,6 @@ float get_animation_duration_ffi(void* const assetManager, EntityId asset, int i
 void get_morph_target_name_ffi(void* const assetManager, EntityId asset, const char *meshName, char *const outPtr, int index);
 int get_morph_target_name_count_ffi(void* const assetManager, EntityId asset, const char *meshName);
 
+void ios_dummy_ffi();
+
 #endif // _POLYVOX_FILAMENT_FFI_API_H

ios/include/SwiftPolyvoxFilamentPlugin-Bridging-Header.h

@@ -2,6 +2,7 @@
 #define SwiftPolyvoxFilamentPlugin_Bridging_Header_h
 
 #import "PolyvoxFilamentApi.h"
+#import "PolyvoxFilamentFFIApi.h"
 
 #endif