[UX Primitives] Split our own primitives from designed components

[seedy]

Description

For some components, we created our own primitives AND designed them according to our mockups. In the same time, we have other uses for the primitives.

I think it would be a good idea to create 'unstyled" versions of those components, so they can also be reused for said purposes.

I noticed a few places on other projects where we start from scratch, because we don't have the primitive (without the said styled) exported.

Maybe this first improvement could bring a standard for naming/structuring export of those primitives.

Good candidates so far:

• Link: UnstyledLink has that purpose but is only used internally
• Button
• IconButton (could have same primitive as Button)