The reward widget, AKA buy me a coffee widget, gives the readers a way to support a creator through the use of donations or tips.
reward is a key value pair that mapping from platform to their QR Code image, therefore, any platform that supports QR code is supported.
|String||-||Alipay QR Code Image.|
|String||-||Wechat QR Code Image.|
|Boolean||Turn on/off reward widget.|