[Feature Request] Add option to export hand skeleton to pose image

[ArrowM]

Is your feature request related to a problem? Please describe.
I want to use the extension to create controlnet poses that include both a body pose and a hand pose. With the current exporting, the hands and feet are separate from the pose skeleton. So, if I want to use both hands and a pose, I need to use 2 controlnet units for inference, which seems to lower the quality of anything that isn't the pose or the hand. I tried using the openpose-hand controlnet preprocessor (which is in the base controlnet extension) and that produced much better results. So....

Describe the solution you'd like
I'm hoping you can add an option to include the hands in the pose skeleton export.

[ChakayaMaya]

This is the one feature that I wish this extension had, hands (and feet if possible) would be amazing, as using a depth map for hands is a limiting factor and slows down inference due to needing an additional ControlNet Unit.