[Google Maps] Add output language support

The following was submitted in the GeocoderLaravel repo by @xSoulRootx (https://github.com/geocoder-php/GeocoderLaravel/issues/144), but probably belongs here:

============

General Information

GeocoderLaravel Version: ^4.0
Laravel Version: 5.7.*
PHP Version: 7.2
Operating System and Version: Ubuntu

Issue Description

Output language in reverse query don't work

Resolve

vendor\geocoder-php\google-maps-provider\GoogleMaps.php

in

public function reverseQuery(ReverseQuery $query): Collection

before

return $this->fetchUrl($url, $query->getLocale(), $query->getLimit(), $query->getData('region', $this->region));

add

        if (null !== $query->getLocale()) {
            $url .= '&result_type='.urlencode($resultType);
        } else {
            $url .= '&language='.env('GOOGLE_MAPS_LOCALE', 'en-US');
        }

or something like this

Start in vendor/geocoder-php/google-maps-provider/GoogleMaps.php at reverseQuery(ReverseQuery $query), then inspect how locale and URL parameters are handled for Google Maps requests. Done means reverse queries honor the requested output language, including a defined behavior when no locale is provided, with the resulting request behavior verified.