Provide means for street adress geolocation

[jailln]

References:

• Need
• Design Note

[Crejak]

Geocoding can be easily performed by calling web services. Most of them are free (at least until a certain amount of requests) but require authentication (through API keys, for example) :

• Google : https://developers.google.com/maps/documentation/geocoding/
• OpenCage : https://opencagedata.com/api
• MapQuest : https://developer.mapquest.com/documentation/open/geocoding-api/
• Geocodio : https://www.geocod.io/
• others...

[jailln]

Done in VCityTeam/UD-Viz#84