API: Implement timeouts, retries for jobs

[3coins]

Summary

Implement these features for create_job API

• timeout_seconds timeout in seconds for the job to complete
• retry_on_timeout whether to retry if a timeout has occurred
• max_retries no of times to attempt retry
• min_retry_interval_millis delay in milliseconds between retry attempts

Context

https://github.com/jupyter-server/jupyter-scheduler/pull/45#discussion_r986892626