[TB] Research ability to dynamically update UI with only JSON token generator

[aaronreed708]

Problem/Concern

This issue is related to #888 and the other issues surrounding our decision to have a "single source of truth" JSON token generator rather than continuing to support both CSS and JSON generation. If we no longer update CSS variables currently in use by the application as the user changes values in their design system, then can we still achieve this dynamic user experience?

Among the things to look at:

• Can StyleDictionary run in a browser?
• Would it need to be manually triggered (e.g. on a save)? Currently UI dynamically changes as user changes values in design system.
• How would a Netlify or Docker user retrieve the the CSS representing the design system they built in Theme Builder?

Proposed Solution

[aaronreed708]

We discussed in call on 08/22 that we can still have the SDK code to propagate CSS changes internally, yet not generate CSS for export. Probably no need for StyleDictionary or save trigger. It will just work as it does currently.

We need to make sure the export and import of a design system will work when JSON token generator code is done.