The source project of this merge request has been removed.
Split out smaller harvesters from Thru.de harvester
The Thru.de harvester contains to small basically independent harvesters with hard-coded configuration. This commits splits them off into separate harvesters and tries to improve upon the initial implementation where possible.
It also adds a simple look-up table for the ISO-3166-2:DE Länderkürzel to turn them into Amtliche Regionalschlüssel as this enables additional regions to be attached to the sewage works.