Support Azure Container Instance using managed identity for auth

[khaliddermoumi]

Description

Using a managed identity for auth is supported an Azure VMs.
It would be very valuable if Container Instances would be supported too. As Container Instances are more lightweight, and designed for one-time build tasks, they are actually a better platform for building packer images than VMs.

Use Case(s)

Run an Azure Container Instance with a managed id, and execute a packer build to create an image

Potential configuration

Same as for VMs (as described in docs).

[petr-stupka]

I would like to add Azure Container Apps as this is the Azure runner solution