Add Typescript types to UI components

[kraus-milan]

Types would enable autocompletion and improve DX

I can help with that

[dashersw]

Would be great! Thank you for your contributions :)

[kraus-milan]

@dashersw I have a question: some of the props, which are passed to Zag directly, are quite complex, e.g.: positioning in Combobox. Should I recreate the same type in Gea UI, or should I just re-export the type?

Re-exporting is much easier, but changes in the future version of Zag will be hard to detect - Gea's documentation might become incomplete and breaking changes might break the apps without us noticing (having examples with all possible props combinations might help, but I'm not sure if that's realistic). So I think recreating the types would be safer option.

[dashersw]

But recreating would also require us to stay up to date with Zag, no?

[kraus-milan]

Yes, that's true. I guess re-exporting and pointing to Zag's documentation will have to do.