Add support for Duo Chat to understand incidents or outages

Proposal

It would be nice to ask Duo Chat whether it is operating reliability or whether there is an incident on .com. Duo Chat could respond with the knowledge about GitLab that it already has, either by using our status pages or checking its own health. One solution might be to proactively show the status of Duo Chat or GitLab as a whole as degraded, without the user having to ask the question to Duo Chat.