Move lemma [early_hep_job_is_scheduled] to separate file
Partially solves #78 (closed)
- Move file
facts/edf.v
tofacts/priority/edf.v
- Move lemma
early_hep_job_is_scheduled
to a separate file so it no longer depends on EDF schedule - Dependence on ideal schedule is still present, because
early_hep_job_is_scheduled
uses lemmascheduling_of_any_segment_starts_with_preemption_time
which assumes an ideal scheduler