exekall: Allow customization of run exit code
exekall run on LISA will return with exit code 20 if an exception was raised during execution of any expression, and 10 if any of the ResultBundle.result is Result.FAILED.
exekall run on LISA will return with exit code 20 if an exception was raised during execution of any expression, and 10 if any of the ResultBundle.result is Result.FAILED.