yerpc feature request: adding a feature to support `typeshare` in addition to

I found the original feature request button redirected to me to the forum of deltachat, which is not about the `yerpc` lib.

I'm creating a feature request for `typeshare`. Because it is easier to extend external types like `uuid::Uuid` without introducing a proxy type.

https://github.com/1Password/typeshare

The initial problem is like this: https://github.com/dbeckwith/rust-typescript-type-def/issues/28
```rs
impl TypeDef for Uuid {
const INFO: TypeInfo = TypeInfo::Native(NativeTypeInfo {
r#ref: TypeExpr::ident(Ident("string")),
});
}
```

But it shows:
```
`Uuid` is not defined in the current craterustc[E0117](https://doc.rust-lang.org/error-index.html#E0117)
```

However, `typeshare` does not have a namespace feature so far: https://github.com/1Password/typeshare/issues/71