Gutenberg: Binding G2 Component controls to Block Editor Hook

[ItsJonQ]

(This is something we'll need for Phase 3: Build)

It would be great to refine how the controls are rigged up with Gutenberg via the block-editor/hooks system.

At the moment, the process is very tedious, verbose, and finicky.
https://github.com/WordPress/gutenberg/blob/master/packages/block-editor/src/hooks/typography.js

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Some things to think about.

• Any typography attribute (e.g. lineHeight) can be enabled/disabled via the theme.json.
• The TypographyPanel can only show if at least one of the typography attributes is enabled.
• Style attribute data is accessed/updated in the attributes.styles object
• attribute.styles data is stored as unique keys
• These keys have to be translated so the style rendering mechanism can work with it (currently PHP, I believe)