[Project] Implement "Slack" Puppet

[kis87988]

Hello students!

Since the Wechaty is a universal messaging SDK. I believe we can implement this with Slack, but not only on Slack. The Slack and Wechat message may be able to sync the messages. So while there is more open idea we can integrate. I think this would be good project for summer

Link to #30

Required skills for all projects

• git version control
• collaborative software development on github.com
• software development in at least one of Wechaty's six languages on at least one of Linux, macOS, and Windows.

Required skills: TypeScript programming language, Slack API.

Useful Links
Introducing Wechaty Puppet Service (Providers)

• https://github.com/wechaty/wechaty-puppet
• https://github.com/wechaty/wechaty-puppet-mock

[huan]

Link to wechaty/wishlist#46