B 22294 INT Part 1 - Migrate queue function to ddl_functions

[ajlusk]

B-22294 Agility Ticket

Summary

Per Ricky's suggestion I'm moving this existing function to the ddl_functions folder in a separate PR so that the changes for this task will be more obvious in the primary PR.

There's also some minor unrelated changes that pre-commit insisted on.

Verification Steps for Reviewers

These are to be checked by a reviewer.

• Has the branch been pulled in and checked out?
• Have the BL acceptance criteria been met for this change?
• Was the CircleCI build successful?
• Has the code been reviewed from a standards and best practices point of view?

How to test

1. Does the get_destination_queue function look look/work the same as it did in the original PR?
   2.go test ./pkg/services/order -testify.m TestListDestinationRequestsOrders

Backend

• Code follows the guidelines for Logging.
• The requirements listed in Querying the Database Safely have been satisfied.

Database

Any new migrations/schema changes:

• Follows our guidelines for Zero-Downtime Deploys.
• Have been communicated to #g-database.
• Secure migrations have been tested following the instructions in our docs.

[r-mettler]

go test ./pkg/services/order -testify.m TestListDestinationRequestsOrders passed
Looks and functions like original.