Add infrastructure as code to 8-secrets

[TobiasAhnoff]

Supporting Rotate, Repave and Repair is important for API security. We talk and write about this, but we have no example code in this repo.

Add e g Bicep code for the API,
https://docs.microsoft.com/en-us/azure/azure-resource-manager/bicep/overview

Rename 8-secrets to 8-secrets-and-rrr.