Returns list of files in a project, that are ready to be delivered to client.

Returns list of files in a project, that are ready to be delivered to client. A file is considered deliverable to client when all of the following criteria are met:<ul><li>the file was added to a job in the last step in the process</li><li>the file is marked as verified (if it was added in a verification step and the file is verifiable, according to its category)</li><li>the job is finished (has Ready status)</li></ul>