Is your feature request related to a problem? Please describe.
When one //sel poly or //sel sphere or other non-cuboid selections, he can't see the exact area selected.
Describe the solution you'd like
Have the selected area highlighted (like in WorldEditCUI back in the days).
Describe alternatives you've considered
You can have each border block highlighted like what you currently do with cuboid selections. Or have some lines outlining the shape like in the old WorldEditCUI
Additional context


Is your feature request related to a problem? Please describe.
When one //sel poly or //sel sphere or other non-cuboid selections, he can't see the exact area selected.
Describe the solution you'd like
Have the selected area highlighted (like in WorldEditCUI back in the days).
Describe alternatives you've considered
You can have each border block highlighted like what you currently do with cuboid selections. Or have some lines outlining the shape like in the old WorldEditCUI
Additional context
