Integrate Moderation Sidebar with Navigation Toolbar in Drupal ~11.2.0

WIP - needs a bit of styling for them off canvas dialog

There’s still room for UX/UI improvements here.

We’re currently considering switching to Drupal Core ~11.2.0, which introduces the "More Actions" feature in the Navigation Top Bar.

It’s still unclear whether this module will remain relevant in that context. If there's still a need for it, perhaps a new, more focused module like Moderation Topbar (moderation_topbar) could be a better fit moving forward.