Start a report job

Start generating a report for the resolved organization and return 202 with the job's id. The report is generated asynchronously: poll GET /reports/jobs/{reportJobId} for its status, then GET /reports/jobs/{reportJobId}/download once it is READY. reportArgs is shaped by reportType; an organization may have at most 5 report jobs queued or processing at once. Set deliveryMethod to EMAIL to get a download link by email instead of fetching it yourself. A VAT_REPORT job is read back as JSON from GET /reports/jobs/{reportJobId}/result; it needs VAT accounts payable enabled on the organization (else 403) and a DE, GB, CZ, ES, or SG filing (else 400).