Feat/abstract theme v2

[jaredcbaum]

This PR:

• removes local theme in favor of @ionic-docs/preset-classic package
• refactors docusaurus.config.js to work with new theme
• refactors docs to use updated DocCard and DocCardList components
• adds prismic-react-renderer and default themes for code styling

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Name	Status	Preview	Comments	Updated (UTC)
capacitor-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 29, 2023 5:42pm