Plane context menu

[brenocq]

@epezent feedback in #24

Right clicking a plane currently shows context menu actions for the axis normal to that plane. This is a bit weird, I think it should show menus for the two axes in that plane instead.

I also find it very weird. I tried to move fast and left this one broken behind kkkkk the plane context menu needs to be implemented.

[brenocq]

Plane context menu was implemented in commit e6a99f9

Peek.2024-12-24.08-51.mp4

It does look waaay better than showing the axis normal to the plane :)