Added SpotColor to renderSwatchLegends

[schroef]

I added spotcolor below lab so it also show those. Could be useful for others. It basically shows the same values as LAB, but more people use PMS colors, then this is handy

case "SPOTColor": sourceSpace = ImageColorSpace.LAB; colorComponents=[c.l,c.a,c.b]; break;

[schroef]

Here's also a great fix for getting the correct LAB color values
https://community.adobe.com/t5/illustrator-discussions/illustrator-javascript-render-swatch-legend-lab-colour-values-incorrect/m-p/11438851#M244737