BoxControl: Unify all the different box control components that we have in the code base.

[youknowriad]

While working on #67544 I noticed that we don't really use the BoxControl component much and that it has been forked several times already.

We used to use it for padding/margin. We still use in some conditions for block gap, padding and margin, but most of the time it's not used and instead a custom "Spacing" component is used.

I believe it was also considered for BorderRadius but was discarded. So in the end, we built a component that we don't really use much (and we forked for the original use-cases that it was built for). (Context here is this PR comment).

Proposal

With some small tweaks/features added to the component, we can drop a number of custom components we have right now, these features include:

• support for presets (like we already for ColorPalette component for instance)
• More customization options (like providing custom icons and labels for the "sides")

All these components should be using BoxControl

cc @WordPress/gutenberg-components