Auto-correct city name for major European cities

[mszell]

See https://github.com/BikeNetKit/dataexport/blob/main/cities/european_capitalsand100000pop.csv
For example Amsterdam, Athens, etc, to not select a weird US version or so.
This would need a hard-coded lookup table. It would set the city_name to the correct nominatimstring, and the export_data_slug to the nice (provided) name. Like https://superblockify.city/api/superblockify/#superblockify.config.Config.PLACES_100_CITIES but less data