Adjunct Batch / Queue querying

[donaldgray]

This ticket follows on from #1143, which implemented the basic Adjunct Batch functionality.

See RFC https://github.com/dlcs/protagonist/blob/develop/docs/rfcs/022-stub-assets.md#bulk-writing and then follow up documentation

• https://dlcs.github.io/public-docs/api-doc/batch/#adjunct-batch
• https://dlcs.github.io/public-docs/api-doc/queues/#adjunct-queue

Basic adjunct batch functionality was implemented in #1143 - this ticket covers additional functionality.