NEW feature: file an e-Invoice as a receipt (voucher) via API

The adapted functionality allows you to file the machine readable/processable e-Invoice formats into the sevdesk platform. Enabling voucher/receipt creation with eInvoice document We are enabling XML as a valid file type for voucher creation. The endpoint /api/v1/Voucher/Factory/uploadTempFile will accept files in XML format as well as a PDF with embedded XML (i.e.