Programmatically move layer to top of layertable in RhinoCommon

@clement @mikity_kogekoge

Without properly understanding the script here:

A thought that came to mind now is… why not trying to access the layerpanel and the control displaying the layertree?

https://developer.rhino3d.com/api/RhinoCommon/html/P_Rhino_UI_PanelIds_Layers.htm

I might give this a try, but maybe that’s not even possible?