Disable UOS by default and enable by WECHATY_PUPPET_WECHAT_UOS=true

[hxianseng]

Now the UOS protocol cannot log in

[huan]

If we can confirm the UOS has problems and the original web protocol will be better, then we can use a options & environment variable to enable UOS, and disable UOS by default.

For example, the following names will be preferred:

1. WECHATY_PUPPET_WECHAT_UOS=true for the shell environment variable
2. options.uos = true for the puppet option.

I'd like to accept a PR based on that.

[henrycoding]

现在大多数web都封了

[hxianseng]

@ @

如果我们能确认UOS有问题，原来的web协议会更好，那么我们可以使用options&环境变量来开启UOS，默认关闭UOS。

例如，以下名称将是首选：

1. WECHATY_PUPPET_WECHAT_UOS=true 对于 shell 环境变量
2. options.uos = true 对于人偶选项。

我想接受基于此的 PR。

This technology is used for the first time. How to turn off the UOS protocol

[huan]

This feature has been implemented by @pacoyang, thank you very much!