Color Picker missing "CIELAB" color space, also referred to as " L*a*b* "

[d2phap]

Discussed in #1542

^{Originally posted by donatopace April 15, 2023}
Hello,
first of all congratulations for the great work you are doing!

Can you add
"CIELAB" color space, also referred to as " Lab* "

it is very important for those who work with images and color management.
"Lab" expresses color as three values:
L* for perceptual lightness
and a* and b* for the four unique colors of human vision: red, green, blue and yellow. CIELAB was intended as a perceptually uniform space, where a given numerical change corresponds to a similar perceived change in color.

Thanks.

[d2phap]

Implemented ImageGlass 9.0 beta 5