In this update, I have added the option of decoding function of Nikon High Efficiency compression NEF, like Gimp Plug-in using ART as raw editor-importer. However I have omitted decoding function of JPEG-XL encoded dng as its decoding results are unstable.
The settings for using this option is same as Gimp Plug-in using ART as raw editor-importer, so please refer the following my post.