Can we have a Handle variant for gray image?

Just like a new variant of iced::advanced::image::Handle.

If so, I’m happy to implement it!

What do you mean by gray image?

Things like image::GrayAlphaImage

Solved.

The image::Handle::from_rgba is enough for use, since we can convert the encoded buffer into DynamicImage and then call .to_rgba8() on it.