services: Add box service support

[Xuanwo]

Box is used to Secure collaboration with anyone, anywhere, on any device. We can add box support for opendal so that our users can access data stored in box.

API Docs: https://developer.box.com/reference/

[A-Stupid-Sun]

let me have a try

[Xuanwo]

Thanks a lot! Wish you have fun here!