Provide config to show channel addresses as operation names in the sidebar for AsyncAPI v3 documents

[diegotorresd]

Description

We recently migrated from AsyncAPI v2 to v3.
For AsyncAPI v2.6.0 documents, the sidebar component provides a fallback that uses the channel's address as an operation name in the sidebar, if a summary property is not provided. We were relying on this behaviour to have a convenient list of all the topics in the sidebar.

After the switch to v3, we have no way to show the channels on the sidebar, which makes it inconvenient for the users of our documentation.

We would like to add a configuration flag that triggers the behaviour to use the channel name also for v3 documents.

I am willing to open a PR to implement this.

Reasons

To maintain consistent UX when rendering both AsyncAPI v2 and v3 documents.

Attachments

Output when rendering a v2 document:

Output when rendering a v3 document:

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