feat: add receive and send link

[huan]

Moved from #1538 , author: @windmemory

This is a prototype of dealing with link message.

My proposal design here is adding another field in the message, which is linkPayload, and store the content inside it. And when user want to send link message, then can say the linkPayload, then wechaty will send a link message.

The structure of the linkPayload is below, refer to the screenshot above

export interface LinkPayload {
  des?: string,
  thumburl?: string
  title: string,
  url: string,
}

The reason I didn't combine other card with link is that I found different type of card has different properties, if we put them all together, and leave some property as optional, it might cause confusion, so I added the specific payload for link.

In this change, I just implemented the Message.say(), since Contact or Room's say() method are similar to each other.

@zixia
Please let me know your thought about this implementation. And I used Amazon cloud9 environment this time, here is the link

I've sent out an invitation email to you, please use that credential to access the cloud9. Let me know if you can not access the cloud9.

[huan]

wechaty@0.19.142 & wechaty-puppet@0.13.7 had been published and included all the changes that you need.

Please try them and let me know if there are any problems.

[huan]

@windmemory Please notice that I had just renamed Message.toUrl to Message.toUrlLink for better understanding and make it explicit different with the Url module from Node.js

And please close this issue after you have no more questions about the UrlLink support, thanks.

[windmemory]

wechaty-puppet-padchat v0.9.26 has been published, the link message's send, receive and forward operations are implemented. This issue could be closed.