Add barcode rendering#37

Open

mnbob70 wants to merge 2 commits intoempira:masterfrom mnbob70:master

+250-3

Commits on Oct 20, 2021

Add barcode rendering based on 2010 patch posted in pdfsharp.net forum. https://forum.pdfsharp.net/viewtopic.php?f=3&t=1215
mnbob70
committed
Add missing linked files
mnbob70
committed