Introduce new Celery beat for "Jobs/Automated tasks"

[lindhe]

According to these docs, we now need (perhaps optionally) a new Celery beat.

Existing worker-beat command:

helm-invenio/charts/invenio/templates/worker-beat-deployment.yaml

Line 58 in 30f2e2a

"celery -A {{ .Values.worker.app }} beat -l {{ .Values.worker.log_level }} -s {{ .Values.worker.celery_schedule }} --pidfile {{ .Values.worker.celery_pidfile }}"

New command:

celery -A invenio_app.celery beat --scheduler invenio_jobs.services.scheduler:RunScheduler