[RFC] Improve Swarmion documentation about swarmion HOT 2 OPEN

Hello @adriencaccia @fargito,

Great job with Swarmion so far I am a huge (a bit biased) fan !

I think it is important to add some context on the core service that holds the httpApi.
Indeed, almost all services will implicitly depend on this services output. I think it is quite important to provide a bit of guidelines on what you should put (or not) in this service as it breaks the independence of the deployments.

In my opinion in a classical AWS serverless stack it should only contain:

• shared DynamoDB database
• shared eventbridge
• shared api gateway
• if you use Cognito JWT authorizer, it's easier to put it in core also

And that's it (no lambda). It should only contain resources that won't change much while the project lives.

Would love to know what you think should go in this core service !

from swarmion.

We also need to explain the nx-cloud setup in Swarmion. See nrwl/nx#10402 (comment)

from swarmion.