Migrate the current ETLs in analytics/wmf-product/jobs/movement_metrics (scheduled via systemd timer in puppet) to Product Analytics Airflow.
As part of this, we should:
- rebuild each of the tables from scratch. In most cases, it shouldn't make much difference, but it will address T358684 and possibly some other small deviations. (This does not mean we will recalculate all the metric values that have been derived from these tables over the years.)
- do the rebuilding in Iceberg format
- move each table to the appropriate one of the new "wmf_*" databases.