提供高性能的已爬取的必应随机图像和每日图像接口，简单易用，简单又快速
https://bing.wxhfywy.cn/api/random
https://bing.wxhfywy.cn/api/random?redirect=true
https://bing.wxhfywy.cn/api/daily
https://bing.wxhfywy.cn/api/daily?format=jpeg
https://bing.wxhfywy.cn/api/daily?format=original
https://bing.wxhfywy.cn/api/daily?redirect=true