Wechaty Plugin Directory

This issue is for linking new Wechaty Plugins so that we can add them to the README at <https://github.com/wechaty/wechaty-plugin-contrib#wechaty-plugin-directory>

[![Wechaty Plugin Contrib](https://img.shields.io/badge/Wechaty%20Plugin-Directory-brightgreen.svg)](https://github.com/wechaty/wechaty-plugin-contrib#wechaty-plugin-directory)
