Support for ZUGFeRD specification 2.2/2.3

[jbartlau (combit - Jochen Bartlau)]

An intermediate workaround is described here:

PDF export: support for ZUGFeRD versions 2.2 and 2.3

Current status List & Label offers the option of creating ZUGFeRD-compliant PDF documents up to ZUGFeRD version 2.1. The creation of PDF documents for ZUGFeRD versions 2.2 and 2.3 is unfortunately not yet possible due to the PDF component currently used. Note: This does not affect X-Rechnung in versions 2.2 and 2.3. These can also be used with ZUGFeRD version 2.1, so that the current solution can also be used with the current standards. Support for ZUGFeRD versions 2.2 and 2.3 However, if …