Separate import queue for additional imports

[jillpe]

Summary

A very large OAI ingest is currently running, however, Katharine has separate imports that she would like to get into the site, while this is happening. It was proposed that a separate 'queue' be enabled for her additional imports, so they do not have to wait for the large ingest to complete before running.

A similar thing was recently done in pals using a separate worker.

Acceptance Criteria

• [ ] Chart changes from scientist-softserv/adventist-dl#723 have been applied to prod deploy chart
• [ ] Admin users have the ability to import items separate from the OAI ingest, while it's running and they do not have to wait for the OAI ingest to complete before running.

[jillpe]

2 tickets:

• set up the worker (weight = 16) (this ticket)
• logic for where jobs go (https://github.com/scientist-softserv/adventist_knapsack/issues/198)

[bkiahstroud]

Blocked by

• https://github.com/scientist-softserv/adventist_knapsack/issues/198