Decide: should we export our styled Octicon component?

[shawnbot]

We have an internal version of the Octicon component from the octicons-react package with system props. I think it makes sense to export for public consumption, but we have a couple of options for doing so:

1. Just export Octicon from primer-react as-is;
2. Call it something more explicit, like PrimerOcticon (which seems redundant to me);
3. Nix our styled component and update our examples to wrap it in <Text> or <Box> to apply margins, etc.

[broccolini]

Let's call it StyledOcticon.

[shawnbot]

Decided! 😁