Add additional Composition Modes for QPainter

The QPainter composition mode support is missing a number of common composition modes. These include:

Hue - Applies the hue from the source pixel to the destination pixel, keeping the saturation and value of the destination.

Saturation - Applies the saturation from the source pixel to the destination, keeping the hue and value of the destination

Luminosity - Applies the luminosity of the source to the destination, keeping the hue and saturation of the destination

Color - Applies both the hue and saturation of the source to the destination, keeping the luminosity of the destination

Addition of these extra composition modes would greatly benefit QPainter