Reviving the dockable_probe

Thanks for reviving this, would love to see this merged. I like the changed which add the query function in particular.

I’m using a gantry attached klicky probe and this fork isn’t working for me, I’m having collisions with the bed when detaching the probe even with a zhop provided. This worked fine before with dock_fixed_z so I’m not sure removing this config was a good idea.

Just wanted to give you some real world testing feedback. I’ll keep using the original branch for now.