Display a "Reusable blocks" listing page, and a link to view all posts containing a given block.
Only displays the number of posts that contain the block, not the number of times the block is used (does /not/ count multiple instances within a single post)
Loosely based on https://github.com/yeswework/fabrica-reusable-block-instances/ -- simplified the code for maintainability and readability. Swapped to WordPress Core methods when available.
Icon comes from https://material.io/resources/icons/?icon=view_list&style=outline
This repository uses https://github.com/10up/action-wordpress-plugin-deploy to deploy to WordPress.org -- all you should need to do is update the version numbers for the release in readme.txt and reusable-block-count.php, and then publish a release in GitHub, and it should automatically deploy.
You can confirm deploys here:
https://plugins.trac.wordpress.org/browser/reusable-block-count