Take exception message from provider response in case of statusCode >= 400

Hey guys.

So I as a developer would like to see message from provider response rather than generic The geocoder server returned an invalid response (%d) for query "%s". We could not parse it. message.

We faced with an issue which is pretty hard to debug on dockerized application. It would be much easier to understand what went wrong if we get message from particular provider response in case InvalidServerResponse is thrown on line: https://github.com/geocoder-php/Geocoder/blob/master/src/Http/Provider/AbstractHttpProvider.php#L78

The main issue that each provider has their own response structure in case of bad request occurs. I don't see a good solution here so far and I have only 2 thoughts so far:

• getParsedResponse method need to be an abstract so each provider will implement their own mechanism of catching errors.
  https://github.com/geocoder-php/Geocoder/blob/master/src/Http/Provider/AbstractHttpProvider.php#L68-L87
• We could add another abstract method like abstract protected function throwClientException(string $message) method inside of an AbstractHttpProvider class. And each provider have to implement it.

I suppose it is kind of feature request.

Comienza con src/Http/Provider/AbstractHttpProvider.php, especialmente con getParsedResponse y la ruta InvalidServerResponse alrededor de las líneas 68-87. Revisa en qué se diferencian las estructuras de respuesta específicas de cada provider y, después, define una estrategia que exponga el mensaje del provider para los códigos de estado >=400 en lugar del error genérico; estará terminado cuando ese comportamiento sea coherente con el diseño seleccionado.