SCCSet should provide a connector for basic types

[perezd]

Clear and concise description of the problem

Per discussion here: bterlson/typespec-zod#19 (comment)

Checklist

• Follow our Code of Conduct
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[perezd]

cc @bterlson

[bterlson]

We provide a connector for HTTP Canonicalizations but should also provide one for just types as this is also useful (as the Zod usecase shows).