[FEATURE REQUEST] - Stash tab grid option for "tab inside folder"

[krissrex]

Is your feature request related to a problem? Please describe.
If you use the POE stash tab folders, the stash grid is shifted down a little.
When you trade from tabs inside folders, and tabs not inside folders, the grid will be misaligned for one of them.

Describe the solution you'd like
A checkbox, like the "4x4" option, to indicate that a tab is inside a folder.
If checked, it will move the grid down a little for that one, or use an optional (user specified) grid placement.

Describe alternatives you've considered

Additional context
When accepting a trade, the stash indicator will highlight the position of an item.