Expand use of sidebar edit

[laryn]

The sidebar edit experience could also be expanded to users and taxonomy terms.

And Gin for Drupal has a hook to make it easy to extend to custom entities/forms (hook_gin_content_form_routes). Maybe we can do something similar for Backdrop to allow selecting the forms and/or paths to apply this on?

[laryn]

There's an issue in the Drupal queue to expand the usage of the sidebar to terms, so this is not far off-base:

• https://www.drupal.org/project/gin/issues/3270626

[laryn]

I've added an .api file with more detail, but this is implemented and two hooks added:

• hook_gin_content_form_paths
• hook_gin_content_form_paths_alter

The names are different than Gin for Drupal but the functionality is very similar, using paths instead of routes. Wildcards are allowed in the paths.