Feature request: Link to active livestream in docs.flutter.dev header

[redbrogdon]

(I'm assuming this isn't a pain to do now that the site has been migrated to Jaspr; ignore me if it is).

I'd love to see a "We're Live!" link at the top of docs.flutter.dev that is visible when Flutter's YT channel is actively livestreaming and links to that stream. YT's API offers some stuff related to this, and I want to believe it wouldn't be difficult to implement, though I admit I've done no real research.

[redbrogdon]

Assigning to Parker for his thoughts on feasibility. 😄

[parlough]

Would be cool. Seems like the status can't properly be retrieved only on the client side. However, we could have a Firebase Cloud Function that returns the live status and add a cache header with a Firebase Hosting rewrite for 60 seconds or so. Would be interesting and could be deployed alongside the existing Firebase Hosting deploy.

Then calling that endpoint and using the result from Jaspr client code is straightforward enough :)