Introduce real-time message bus updates for accepted and unaccepted solutions, ensuring live synchronization across users.
Key changes:
- Publish solution acceptance/unacceptance updates via MessageBus.
- Refactor `accepted_answer_post_info` and related logic for cleaner handling of accepted answer data.
- Update both backend and frontend to support reactive updates when solutions are toggled.
- Add loading states for Accept/Unaccept buttons to enhance UX during async operations.
This commit autoloads plugin files, and also extracts features into their own modules.
- `plugin.rb` is smaller
- external plugins like discourse-automation and discourse-assign have their own entrypoints
- solved filters as well