Pre-night simulation generation

Daily prenight briefing simulations are currently kicked off by a cron job on sdfcron001.sdf.slac.stanford.edu as user neilsen.

This runs the script at /sdf/data/rubin/shared/scheduler/packages/rubin_sim/batch/run_prenight_sims.sh as a slurm job at 8:15am Pacific time every morning, and takes about 10 minutes to run. The rubin_sim project holds this script in batch/run_prenight_sims.sh.

Additional documentation can be found in the docs for rubin_sim.