Allow hiding of Code panel in inspection (connected) mode

[Steve-OH]

The Code panel serves no useful purpose when the visualizer is in inspection mode, so it would be nice if there were a way to remove it and free up a little more real estate, which is especially important when the visualizer is embedded in an iframe. Another option would be to allow the visibility of each of the panels to be toggled individually.

[johtso]

Currently bumping up against this too! The viz is basically unusable without a second monitor at the moment. A toggle to show and hide the panel would massively add to usability with very little effort!

I'm currently having to just hide the element with devtools.

[davidkpiano]

Will prioritize this, thanks for the report!