Document the helm chart + airflow dag as a deployment coordinator pattern

[patriciarussellCAS]

@pbastia is this ticket still required? Is this for all of our services or do we need one for BCIERS?

[pbastia]

@patriciarussellCAS Clearly not an urgent thing but I think with more team members getting onboarded, we want to document this before it goes away from our collective memory cc @dleard