Enhance workflow error logs

[halljd]

Many of the errors displayed in the 'results/messages' section in designer when a workflow fails are vague and unhelpful. For example, I had a workflow recently fail because my data source table had duplicate rows. The error reported was "the pipe has ended". This is a frequent problem when debugging workflow issues, and a lot of extra time is needed due to lack of useful error messages. Please enhance this error logging function to attach to underlying data source systems, etc. so that better error messages can be displayed when a workflow fails.

Note: Depending on database platform/function/application where an error occurs, some errors are better than others. However, we work with the Snowflake database platform frequently, and many of the errors we've seen while testing workflows are unusable. If different teams support the error logging functionality depending on source system, etc. where the error occurred, we would request the Snowflake logging to be enhanced first if possible.