feat: Error Handling to mark jobs with job_id "cancelled" or "timed out" as failed in the airflow interface

[harkamvysis]

Fixes #5

add a new airflow exception when job_state == "canceled" and job_state == "timed out" so that the operator marks such tasks as failed instead of successful.

Signed-off-by: Charalampos Kamvysis haralampos@kamvysis.com