Method to get User's Download Directory

[mattsplat]

I needed to get the download directory to save a file from a cloud disk. There doesn't seem to be a method for this already.
On the electron server a route already exists
https://github.com/NativePHP/electron-plugin/blob/920c6a6b18c024669bf2f9338c443aff770880bf/src/server/api/app.ts#L27

You can currently do this.

    $client = new \Native\Laravel\Client\Client();
    $path = $client->get('app/path/downloads')['path'];

It would be nice if this was a method inside Native\Laravel\Client\Client\App::class so it called using the facade.
App::path('downloads')