Reduce Sash Minimum size

[DRSDavidSoft]

Current Issue

Currently, the minimum allowed value for workbench.sash.size is 4, which I believe to be too thick.

Feature Request

I would like to ask that the user would be able to set the workbench.sash.size to 2, if desired by the user. I believe 2 is an acceptable level for the display I'm using, and it's more pleasant than the thick 4 value.

I'm also fine with a value of 1.

Alternative feature request

Provide an alternative option for workbench.sash.displaySize that would define how thick should the line appear, while keeping the original parameter to a greater value. This would allow the user to resize the panels more freely, but still display a thin line.

If it is not accepted to use a value below 4 for the actual setting, this would also be highly appreciated.

[sbatten]

It looks like @joaomoreno and @lszomoru have set the minimum, leaving to them to decide if 2 is safe

[DRSDavidSoft]

If it's possible to implement the alternative method (displaySize thinner than actual size), I'd also appreciate it (in fact, as a user, I prefer this).

[joaomoreno]

I'd go with lowering the minimum for workbench.sash.size, but when < 4 it would only affect display size.