Add the ability to bulk insert to EntityUsage service

I've tested this on a project with thousand of nodes and paragraphs and many many revisions - some nodes with over 100! And it completes the bulk load of the entity_usage table much much quicker. Especially when combined with https://www.drupal.org/project/entity_lru_cache → which fixes out-of-control memory usage due to loading entities. There is still much that can be improved in follow-ups. For example:

• process entities in parallel using child processes
• Not recalculate the usage data if the previous revision and current revision have not changed (this could benefit runtime entity saving too if we were smart)

I need to confirm we have test coverage of all the code before we proceed in actually merging this.

Nice work! Thanks for helping!

I have opened 📌 Allow users to clear the bulk inserting state flag on the UI Active as a follow-up so we can add an option to clear the state flag on the UI, but that isn't a huge deal IMO.

Automatically closed - issue fixed for 2 weeks with no activity.