Refactor error_source.go

[adamyeats]

This PR includes a number of changes to error_source.go:

• SourceError renamed to ErrorWithSource to be more explicit about intention. Arguments have been flipped so that err is passed in the first position to be more consistent with the other functions in the error_source package.
• ErrorWithSource uses the functional options pattern to make it more extensible via ErrorSourceOptions, and make the bool passed as the last param optional (defaults to false). An override can be set by using calling WithOverride, e.g. ErrorWithSource(err, source, WithOverride())
• Response renamed to ResponseWithErrorSource to be more explicit about intention

[github-actions]

This pull request has been automatically marked as stale because it has not had activity in the last 90 days. It will be closed in 2 weeks if no further activity occurs. Please feel free to give a status update now, ping for review, or re-open when it's ready. Thank you for your contributions!

[github-actions]

This pull request has been automatically closed because it has not had activity in the last 2 weeks. Please feel free to give a status update now, ping for review, or re-open when it's ready. Thank you for your contributions!