Introduce the concept of primary and secondary weathers:
* Primary weather keeps the same behavior as previously across all weather providers, so it's non-breaking. This location is not necessarily the current location, just the primary weather location set by the user.
* The GenericWeatherReceiver now has a new extra WeatherSecondaryJson, that receives a json list with secondary weather locations.
It's guaranteed that the primary weather always exists, so the list of WeatherSpecs provided to devices is never empty. Update all support classes accordingly.
Wind information are stored and put in the reconstructed OWM response.
A long standing bug (having the "name" field inside "main" instead of at
the root level of the json) has been fixed
Lineage OS receiver and if possible weather notification app receiver will
be added in further commits.
See #482