Apply an ingestion workflow's results to the PCB version. The workflow must be waiting at
awaiting_resolution.

Choose which of the files the workflow found to keep in accepted_files, using the
filename, file_type, layer_name, and source values from the tasks' result.files.
For gerbers, you can change layer_name to assign a file to a different layer. Set
replace_pcb_files to replace the version's existing design files instead of adding to them,
and use specifications to set specifications such as the layer count at the same time.

Applying the results runs in the background, and this endpoint responds with 202 Accepted.
Poll GET /api/v3/pcb/{pcb_id}/{pcb_version}/ingestion/workflow/{workflow_id}/import
(the poll_url in the response) until the import is complete, then call DELETE on the same
URL to finish.