[ENG-10707](https://linear.app/comm/issue/ENG-10707/add-queueddmoperations-table-to-sqlite).
`queued_dm_operations_idx_timestamp` - helpful for pruning
`queued_dm_operations_idx_queue` - helpful for cleaning queue
There is no unique identifier (not all DMOps has id), so we use `AUTOINCREMENT` column