[Scene Mesh] Add the probe bounds transform mode (with the arrows)

For?

S&Box

What can't you do?

In hammer there's this super handy mode for resizing or transforming the bounds of the probe, which has arrows on either side, like some sort of one-dimensional face mode. Without this mode it is very hard to align the bounds within Scene Editor, as the scale tool scales it in both directions of selected axis.

How would you like it to work?

In hammer there's a whole separate select tool which is context dependent based on what type of object is selected (probe, regular mesh, maybe some other thing, etc) next to regular transform, rotate, scale modes.

Since that's currently non-existent in Scene Editor, I am not quite sure how could it exist separately from that, so feel free to come up with any solution for this.

What have you tried?

I tried aligning probes in Scene using the regular scale tool. I hate doing that every time it has to be done, if I want proper bounds that actually properly align with walls and floors, I would much rather do it with the mentioned Select mode or whatever it's actually called in hammer.

Additional context

No response

Facepunch / sbox-issues