Make style section hideable and suppressable

[maltenuhn]

Problems

• The style section and its subsections are difficult to work with and understand, especially for components.
• Additionally, the completely hiding the style section was not well received.

Solution
Part 1

• Create a new "Styles" (sic) Section
• Make that capable of folding in and out the entire set of existing style subsections
• use the Utopia API to expand, collapse, or hide this new section (bikeshed the naming)

Part 2

• Create a new Section called "Advanced"
• Relabel the Target Selector subsection / component as "Target" (not 'style')
• Relabel the CSS Classname subsection (the one we show when Tailwind is enabled) as 'CSS'
• Move them into the "Advanced" section
• Make the 'advanced' subsection closed contracted by default (so you don't see the Target and CSS subsections

Part 3: Defaults and Component API

• For components, collapse the new Styles section by default.
• API should allow showing it as collapsed, expanded, and hidden (bikedshed labels...), and section should respect that
• for elements, expand the Styles section by default

[bkrmendy]

#5719 implements the UI parts

[bkrmendy]

#5723 adds the component API parts