[FEAT] Conversation ReadMark

[hcfw007]

This feature is implemented in wechaty-puppet and wechaty. So we should also implement it in wechaty-grpc and wechaty-puppet-service.

[hcfw007]

#188

[huan]

Can we link this issue to related Wechaty & Puppet issues so I can track them together?

Thanks!

[hcfw007]

I did not find the issue. But it's a feature in wechaty and wechaty-puppet.
https://github.com/wechaty/puppet/blob/c70a9b47a49170e94da7c06c4ead2348dc6dd88f/src/mixins/message-mixin.ts#LL57C22-L57C22

[huan]

I think this can be closed because it's done?

[hcfw007]

Yes, thank you.