Add support of Verso notebooks

[slyshykO]

With support for Polyglot Notebooks and .NET Interactive ending, it makes more sense to add support for Verso notebooks.

https://versonotebooks.com/

[gnrkr789]

Agreed — given the deprecation timeline for Polyglot Notebooks and .NET Interactive, moving to Verso is the right call. We'll incorporate this into our roadmap. I'll open a dedicated tracking issue to scope the work and coordinate contributions. Thanks for raising this.