feat: support CMYK color mode

[quarksb]

test psd file Archive.zip

[Agamnentzar]

CMYK color support is mostly done, there's just an issue with converting CMYK to RGB, I tried implementing standard conversion (see cmykToRgb()) function but it turns out it gives completely different results than in photoshop. I think to get correct conversion it would have to apply proper color profile which is really complicated. If you just need to get bitmap data for CMYK format I think I can enable it easily, but it would only work with imageData: true option, and you wouldn't be able to get canvases.

[Agamnentzar]

You can enable CMYK loading if you add ColorMode.CMYK to supportedColorModes array in psdReader.ts