feat: implement jobqueue

exit-codes.go

go.mod

go.sum

gob.go

gob_test.go

issue-1_test.go

job-log.go

job-run.go

job-stat.go

job-status.go

job.go

job_test.go

jobs.go

jobs_test.go

json.go

json_test.go

log-writer.go

manager.go

manger_test.go

prority.go