higher than 8 bit color depthj and jpeg xl image output support

[StephanieSunshine]

Is your feature request related to a problem? Please describe.
HDR Linux Desktops are finally coming. With the latest KDE Plasma, HDR Color can be enabled. Finding wallpapers that can take advantage of this is proving to be difficult. Looking at the desktop version of Xaos, I see only Truecolor and 256 colors listed.

Describe the solution you'd like
What I would like to see is the ability to increase the color depth higher than 8 bit. 10 Bit color seems to be the start of HDR. From what I understand Jpeg XL already supports these higher depths. The latest KDE Plasma also seems to support Jpeg XL images for its wallpapers as well.

Describe alternatives you've considered
Looking around, I haven't managed to find a Fractal generator / explorer that enables this yet.