Add luminosity blend option to local adjustments panel

[Egregius ([Greg] (Micro 4/3 + Win11))]

See also this one:

HSL-defined mask tool, with color sampler

Aa new mask tool based on the existing HSL tool wheel, enhanced with tonal ranges on Luminosity and color saturation. Similar to feathering used in Hue, luminosity and saturation scales have feathering. A color sampler tool would allow to create or extend the HSL ranges on the fly.