WIP: Google Play platform implementation

for the request library yes, then the custom logic per platform handles the rest. In terms of google its only the response code. Unless server error you usually get '404' with a body such as this:
```
{
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "applicationNotFound",
    "message": "No application was found for the given package name.",
    "locationType": "parameter",
    "location": "packageName"
   }
  ],
  "code": 404,
  "message": "No application was found for the given package name."
 }
}
```

As for apple, the verify function handles the extra status codes inside the 200 object.