ZD_Record support for addError and hasErrors SObject class methods

[jdevlin-bah]

Add support to the ZD_Record class to handle the addError, hasErrors, and getErrors methods for the record itself. field level errors will be handled later.

https://help.salesforce.com/s/articleView?id=release-notes.rn_apex_trackErrors.htm&release=228&type=5

https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_methods_system_sobject.htm