[FR]: layout options for command buttons

[git-rz]

My button layout only works when viewed on mobile, or when I adjust my browser width like so:

Otherwise, it looks like this:

I would like to be able to control the layout of the buttons.

Describe the solution you'd like

On the Commands tab of the Bed Visualizer settings, have a button + Add Section.

Buttons are added inside of Sections. Sections are guaranteed to be vertically stacked.

Sections have internal layout options:

• grid (user specifies dimensions)
• flow