Update Pattern Registration flow in theme to use patterns directory

[fabiankaegy]

Description of the Change

WordPress 6.0 introduces the ability to register patterns via the patterns/ directory at the root of the theme. This mechanism makes it much simpler to manage patterns and therefore is what I would recommend going forward.

The Dev Note is not jet published but you can view the draft here: WordPress/gutenberg#39654 (comment)

Closes #100

Alternate Designs

Possible Drawbacks

Verification Process

• Add a new PHP file in the patterns/ directory of the theme.
• Add the metadata comment at the top of the file and the block pattern markup underneath.

<?php
/**
 * Title: Example Pattern
 * Slug: tenup-theme/example
 * Categories: 10up-theme
 *
 * @package TenUpTheme
 */

?>
<!-- wp:heading -->
<h2>Example Pattern</h2>
<!-- /wp:heading -->

• Open the editor and view that the pattern shows up in the pattern picker

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests passed.

Changelog Entry

Changed how patterns are being registered to align with the API introduced in WordPress 6.0

Credits

Props @

[joesnellpdx]

@fabiankaegy

I approve - but let's be sure to have this update in the GB site and in your next post update.