CIECAM02 JCh support

[Nate Baldwin]

Description

CIECAM02-UCS (Jab) is currently implemented in Leonardo as CIECAM02. Leonardo should also support CIECAM02 (JCh) with proper name. JCh is supported in dependency already: https://github.com/connorgr/d3-cam02

Why do you need this feature?

Polar interpolation of CAM02 should be supported as hue translation will be more chromatically smooth.

Leonardo package and version

Additional context

[Nate Baldwin]

Resolved: Support currently included in Leonardo contrast-colors for polar CIECAM02-UCS.