PoC - Introducing MobX state management - possiblity of setting up browser side interaction

[filipakkad]

Based on the conversation on Slack

Introducing MobX state management library to control all the components (for now only few, e.g. Callout, Button for a PoC purposes)

See the demo app

This is not a Blueprint-specific idea so if you'll find it interesting it could be applicable in any shiny.react-based library

The things to be improved IMHO:

1. The API of setObservable & listenTo should be changed so that it handle namespaced strings (e.g. ns("myObservable"))
2. In the current form the initial/default state is set in each of the setObservable function. In most of the cases listenTo just listens to the change without setting anything. Perhaps it would be worth to change the

listenTo(titleText1 = NA, bodyText1 = NA)` # + you can't easily namespace the string

into

listenTo(ns("titleText1"), ns("bodyText1"))

[kamilzyla]

I'll link the relevant Slack discussions here so they don't get lost:

1. #tech-team
2. #lab-blueprint

[kamilzyla]

Issue for this idea created in shiny.react repo. Archiving this branch under archive/2022-07-25/client-side-interaction tag and closing PR.