Update Here Geocode and Reverse Geocode Provider to GS7 (v7)

Here.com has released their GS7 (v7) API.

We are currently using here-provider 0.6.0 that is using v6.2 endpoints. We are updating to use Here's GS7 endpoints per a conversation with our Here.com rep. Our rep let us know that Here.com intends to drop support for our current endpoints (v6.2) and that we should switch to the new GS7 endpoints.

Note: with the change to GS7 the shape of the responses from here has completely changed
Update was made using the following Here.com Documentation.

Here Migration Docs
https://www.here.com/docs/bundle/geocoding-and-search-api-migration-guide/page/migration-geocoder/README.html

Geo-code Endpoint Docs
https://www.here.com/docs/bundle/geocoding-and-search-api-developer-guide/page/topics/endpoint-geocode-brief.html

Reverse Geo-code Endpoint Docs
https://www.here.com/docs/bundle/geocoding-and-search-api-developer-guide/page/topics/endpoint-reverse-geocode-brief.html

Here API Reference
https://www.here.com/docs/bundle/geocoding-and-search-api-v7-api-reference/page/index.html

Empieza con el proveedor Here que actualmente usa here-provider 0.6.0 y compara su gestión de geocode y reverse-geocode con la documentación enlazada de migración, endpoints y referencia de API. Actualiza la integración para los endpoints de GS7 y sus estructuras de respuesta modificadas; se considera terminado cuando ambas operaciones usan la nueva API sin depender de la estructura de respuesta de v6.2.