1182: Add custom exceptions for unsupported XPT format and enhance error handling in XPTReader#1644

SFJohnson24 merged 9 commits intomaincdisc-org/cdisc-rules-engine:mainfrom

1182-SAS-V8-Transport-File-Error-Messagecdisc-org/cdisc-rules-engine:1182-SAS-V8-Transport-File-Error-MessageCopy head branch name to clipboard