Add method .hasMessages()

[WaleedAshraf]

Add method asyncapi.hasMessages() like we have others, asyncapi.hasChannels().
This will be used to check if messages are defined, and then show them in a separate section.

To be used here:
asyncapi/html-template#31 (review)

Related PR: asyncapi/html-template#31

[github-actions]

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[derberg]

@fmvilas what is you view on this. asyncapi.hasChannels() and asyncapi.hasServers() make sense as channels and servers are root elements, messages are not. But I do not think we are super strict in models here right? because we already have asyncapi.allMessages() then why not having asyncapi.hasMessages()? right?

[fmvilas]

It totally makes sense, yes. Actually, the purpose of the parser is to eventually offer an abstract infterface that's independent of the AsyncAPI document structure. This is a good example.

[asyncapi-bot]

🎉 This issue has been resolved in version 0.19.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[fmvilas]

Yes. We can probably have another issue to target all those missing methods. Not necessarily for v1 though.

[derberg]

@fmvilas yeap, added #88