Add more detail to schedule logs command
Summary: Previously, the schedule log command only showed the top level log file, which captured errors at the cron and bash script level. This diff updates the schedule log command to also link to the individual execution logs, which are needed to debug user-code error issues.
Test Plan: Run dagster schedule logs in the toys directory for (1) a schedule with result logs and (2) a schedule without result logs
Reviewed By: dgibson
Differential Revision: https://dagster.phacility.com/D5653