StackView
Stack layout experimentation with form objects inpired by UIStackView

In form editor
Create a rectangle or maybe a groupbox for the stack background , then group it with some form objects.
Rectangle must be under other objects so first in group
In code
Init the stack and keep it somewhere (Form, class instance in Form, …)
Form.stack:=cs.Stack.new("Rectangle"; "Button"; "Input"; "Text"; "Button2")
The first element must be the rectangle
then in On Load and On Resize call perform to move objects according to wanted options
Form.stack.perform(New object("spacing"; 20; "axis"; "vertical")) // could be horizontal
Form macros
to help there is some macros
stack: create
select some elements then launch the macro, it will create for you the group and the transparent background rectangle

stack: align vertically & horizontally
you could in form macro menu apply horizontal or vertical stack alignment to the selected group

stack: set spacing
Before applying alignment you could register the spacing.
this will register custom json key in Form in first element of group, the rectangle
stack: generate new code
It generate the code to init a cs.Stack with all selected group children elements and the perform with registered parameters.
TODO
- some inner padding conf variable
- other distributions than
fillone, for instance align the objects to the left instead of taking the full width
