Editor: Support Inserting Page Section Blocks

[apeatling]

Allow our customers to easily modify page templates (or construct their own) by inserting prebuilt “page sections” into the editor.

Sections: Research technical options
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Examples in the wild
Take a look at how Kioken handles page sections for constructing and editing page templates: https://www.youtube.com/watch?v=Mi4oixuQ__Q

Tasks

• Analyze existing page templates, and home page templates for all new template-first themes. Identify unique page sections that can be extracted.
• Extract each page section unit as a post in wp_blocks. This will allow easy combinations for the alternative templates to be made easily.
• Reconstruct all page templates using these page sections.
• Expose page sections in the block inserter under a “Sections” category so that users can insert, delete, and move whole sections.

[apeatling]

This is something that will need to be worked on via core, as it's a foundational part of the FSE efforts there.

[shaunandrews]

The (current) Core issue for this, which they're calling "Block Patterns": WordPress/gutenberg#17335

[noahtallen]

Accidentally closed this :)

[davipontesblog]

Closing in favor of the core WordPress Block Patterns, here: WordPress/gutenberg#17335