Easily override theme default settings via theme.json

[flexseth]

What problem does this address?

Very simple customization of theme features by overriding theme settings.

What is your proposed solution?

php hook to override a setting in theme.json. Allowing the ability to create a user interface to modify theme settings.

Example

<?php 
/**
 * Custom theme.json injection: Theme Supports: Dropcap
 * @see WordPress documentation on theme.json overrides (DNE)
 */

 // Add support for Dropcap in TwentyTwenty*
 add_theme_supports('dropcap', 'twentytwentythree') {
    return { 
        "typography": {
            "dropcap": "true"
        }
    }
 }

[flexseth]

Referenced in this Style Engine feature requests / PR: #42493

File commit here - a filter exposing the style engine from the data store and storing it to an array.

Did not pass E2E testing... Just was looking around at some of the style engine info (didn't know that's what it was called 🤩)