Create a theme example of Twenty Twenty-Four with more custom pattern integration

[annezazu]

To help showcase how folks can curate pieces of the Site Editing experience, I am opening an issue to create a Twenty Twenty-Four with theme & custom provided starter patterns and more prioritized patterns from the directory. Right now, TT4 already has starter patterns and has two patterns pulled from the pattern directory. This would show going a step further by adding one's own custom patterns to the starter patterns and bringing in more patterns from the pattern directory. Here's the documentation.

I'm hoping to then use this as an example in a WordPress.org/news post highlighting curation tooling and adoption pathways to help encourage adoption and raise awareness on these features alongside broader documentation updates.

[justintadlock]

This can be broken down into three separate examples:

• Post/Page Starter Pattern
• Template Starter Pattern
• Remote Patterns