feat(api): import schemas in the types file as types

[erunion]

🧰 Changes

Because all of the schemas that we're importing in codegen'd types.ts files are for types only we can import them explicitly as types.

[kanadgupta]

this appears to be a fine change according to my testing but
i don't think i understand why... technically speaking, aren't the schemas in schemas.ts actually JSON schema objects as consts?

[erunion]

they are but they're used in types.ts as only types