Enhance /queue endpoint with filtering and version bump to 2.2.9

[goldlabelapps]

This pull request updates the queue API endpoint to support filtering by collection and group, and enhances the returned data structure. The version number is also incremented to reflect these changes.

API enhancements to /queue endpoint:

• Added collection and group query parameters to allow filtering of queue records by these fields.
• The response now includes both the total record count and the count after applying filters, as well as the "next" record in the queue based on the latest update, instead of returning a random example record.
• Improved error handling: errors now return a consistent response structure with meta information, rather than raising an HTTP exception.

Version update:

• Incremented the application version from 2.2.8 to 2.2.9 in app/__init__.py.