Livebook app showing list of Kino widgets

[hugobarauna]

Related to #443

I developed a Livebook app that contains a list of Kino widgets. You can view a proof of concept running here. Additionally, you can view the notebook source code here.

We can include a link to this app in the README or documentation.

One reason for creating this app is to allow users to see the list of Kino widgets visually without having to run Livebook themselves.

Another reason is simply because it's cool to have this running live. 😎

[josevalim]

I would add this to Livebook repo itself. We should probably have a collection of apps in the repo itself, with several example. Kino UI being one of them. Another for charting, one for ML, etc. having examples of actual apps people can immediately run would be fantastic.

[hugobarauna]

@josevalim good idea! Moved to livebook-dev/livebook#2649