Create a new dynamic scheduler

For now, if someone wants to create a new dynamic scheduler (or transform a static scheduler into dynamic), here is what one should do:

• change super class from ISchedulingAlgorithm to DynScheduler

• add the call DynScheduler::on_simulation_start(date, batsim_config); at the beginning of on_simulation_start

• add the call DynScheduler::make_decisions(date, update_info, compare_info); at the end of make_decisions

• update the status of jobs with if (broker_enabled) broker->update_status_if_dyn_job(new_job_id, STATUS); each time the scheduler adds or rejects a job

See for example this commit.