Add Queue UI integration

Problem/Motivation

The Queue UI module provides some helpful admin screens to work with queues. However,

Steps to reproduce

If you install the Queue UI module, it can do basic operations for a Queue Unique queue but can't provide detailed inspection since the factory class and table are different.

Proposed resolution

Add a simple subclass to handle queue_unique like the core queue. Optionally change the one method to add the hash to the item or table output.

Remaining tasks

Write the code

User interface changes

n/a

API changes

n/a

Data model changes

n/a