Add support for 3DST images, used on Nintendo Anime Channel for textures and thumbnails.
Notes:
This PR isn't compatible with 3DST images from Minecraft for New 3DS, as they use a different implementation.
AFAIK, the Nintendo Anime Channel application only supports resolutions which belong to a power of 2 (based on my testing).
The number 3 is missing from the dictionary. That's because the Nintendo Anime Channel doesn't have a format assigned to that number (if you try to load an image with that format number, it won't display anything).
Add support for 3DST images, used on Nintendo Anime Channel for textures and thumbnails.
Notes: