Stack Block: Add space between option

[iamtakashi]

It's not yet possible to make a design in the editor like this by distributing elements at the top and the bottom of a space.

We already have a space between option in the row block, but it's missing for the Stack block.

Row	Stack

It'd be great if we could add the option to Stack block.

[richtabor]

Agreed, I think this could be cool.

[andrewserong]

+1 Great idea! There's a related issue for adding in vertical alignment options for stack / vertical orientations of flex layouts here: #35849. I've added this to the tracking issue in #44720

[tellthemachines]

It's fairly straightforward to add this control, but what we should bear in mind is that it won't work unless the Stack has a fixed height. (This is why we didn't add it in the first place, also because we only implemented the Min-height control very recently). Could we work around that by add a warning of some sort when this option is selected?