Add attribute support for EntityQueueHandler plugin

Problem/Motivation

As per https://www.drupal.org/node/3395582 not providing an attribute class is deprecated in 11.2

We could also finally cut a semver branch for this and drop support for anything below 10.2 (or even better, any unsupported versions of Drupal) so we can remove the annotations.

Steps to reproduce

N/A

Proposed resolution

Add attribute support

Remaining tasks

Do it

User interface changes

N/A

API changes

Attributes added.

Data model changes

N/A