Support for `specta`

[dcastro]

This is a feature request related to #8

Would it be possible to add support for specta? This would allow mitsein to easily interoperate with tauri applications.

[olson-sean-k]

Thanks for bringing specta to my attention!

I think supporting specta raises the same question discussed in #8 regarding ts-rs: what representations of non-empty types ought to be used in TypeScript? I have very little experience with TypeScript, so this isn't very clear to me.

This also makes me wonder if there's One TypeScript Exporter to Rule Them All™. 😄 Is it worthwhile to support multiple crates that export non-empty types to TypeScript?