Suggestion: Add section on regional scaling (multi-region deployments)

[DenzoNL]

Hey there! First of all I'd like to say that Nitro looks very promising. We've been using Nest.JS with great pleasure at my place of work, and Serverless Framework on AWS to a not so pleasurable extent, so we're very excited to get started with rewriting some of those in Nitro.

One of the main reasons we use serverless technologies (and I think many for others) is to deploy our APIs in multiple regions to achieve low latencies for customers all over the world. It would be nice if the workshop's "Extra" section had some information on how to do this, as it's the one bit of serverless that doesn't scale automatically and I think it's a very common use case.

I would love to create a PR myself, but I'm fairly new to Azure so I have no clue on what would be the best way to do this. I did get something working today using Azure Front Door, but that's about it.

Thanks for all your efforts so far and I hope you will consider my request :)