Photon Geocoder

[jinzo]

This is a basic implementation of the open source Photon Geocoder for reverse geocoding. There isn't much documentation, but the source reveals that only the lang optional parameter is useful for Traccar. After some tests, it seems that the fields are mostly present always and there is little to no deviation (for example, Settlement is always in key city ect.)

• https://photon.komoot.io/
• https://github.com/komoot/photon

[jinzo]

So I refactored the code as in the previous comment. Renamed Photon Geocoder to "standard" GeocodeJSON and refactored the Ban Geocoder based on it because Ban does not provide the country with it's output, and every other solution I thought about was worse. I changed the test (and Ban geocoder behaviour) in two ways:

• name is no longer used as a Street name as this was plain wrong. name is housenumber + street in Ban, therefore it is correct to store/use them separately.
• context is no longer used as District, as this looks plain wrong too and we now store district key that is provided with Ban in District. The context is now discarded as I don't think this can be sanely fit into the current system.

This changes make Ban geocoder more in line with what other Geocoders store in Address but still does not break any actual running systems.

[tananaev]

Merged, thank you.