Environment variable name update: WECHATY_PUPPET_SERVICE_ENDPOINT

[huan]

We have updated the HOSTIE name to SERVICE, and so does in the code class/variable names. (i.e. PuppetHostie -> PuppetService)

- WECHATY_PUPPET_HOSTIE_ENDPOINT
+ WECHATY_PUPPET_SERVICE_ENDPOINT

- PuppetHostie
- PuppetService

- wechaty-puppet-hostie
+ wechaty-puppet-service

[zhangchunsheng]

What about the url "https://api.chatie.io/v0/hosties"?

I think this url need to be changed.

[huan]

The server API will not be changed because it will cause unnecessary breaking changes.

In TypeScript, we have a Wechaty gRPC Resolver for encapsulating this logic, please refer to the source code and see if it can inspire the PHP.

https://github.com/wechaty/token/blob/main/src/wechaty-token.ts