Re-export tippy core in typings file

[KubaJastrz]

Missing types after d081690

[atomiks]

Looks good

What do you think about cases where users need to import the core library's animations, themes, etc? Should they just explicitly install tippy.js themselves or just use the implicit dependency path?

[KubaJastrz]

I think there is no reason to actually export everything from core in framework packages. You can just use the core instead. The core re-export is just a convenience more than anything, for small/unsupported cases.

The core package is installed as a dependency, so it will be always available, even if it is not present in package.json, but one can always add it if they need to have everything explicit 🤷‍♂️ (like me 😅).