ZUGFeRD: WIP Allow blocking factur-x and xrechnung invoice files with config flags

Jobs/Exceptions.vb

@@ -40,6 +40,14 @@ Public Class Exceptions
         End Sub
     End Class
 
+    Public Class UnsupportedFerdException
+        Inherits ApplicationException
+
+        Public Sub New()
+            MyBase.New("ZUGFeRD document found but is not supported!")
+        End Sub
+    End Class
+
     Public Class NoFerdsException
         Inherits ApplicationException