Feature/esri third party

I'm hoping to get permissions to use https://arcgis-app.gjcity.org/arcgis/rest/services/Hub/Development/MapServer/8 to import Solar Panel installations (and information) into OpenStreetMap.

In any case, this pull request is a pre-requisite for that support.

Current permissions for the Solar Panel installation data is CC-BY (I don't know which version), but past conversations have indicated that the city/county will be generally positive towards a request.

https://data-gjcitygis.opendata.arcgis.com/datasets/42c541a572fe4e8fb93ae95ed40bb966_8