Make it possible to use optional parameters (i.e. support of folders)

[carnevalle]

I have added support for using the optional parameters in the Cloudinary Upload API. The parameters are configurable when creating the field using the cloudinary method, like this

use Silvanite\NovaFieldCloudinary\Fields\CloudinaryImage;

public function fields(Request $request)
{
    return [
        ...
        CloudinaryImage::make('Image')->cloudinary([
            'folder' => 'images'
        ]),
    ]
}

[lukebouch]

@carnevalle @FlavioIshii This looks really interesting. I will take a look at this and see if we can get this merged.