Add integration for AzureContainerRegistry

[captainsafia]

As part of #8792, we added support for associating a compute environment with a registry. We want to extend this further by allowing users to model container registries as resources in the application. Something like the following.

var builder = DistributedApplicationBuilder.Create();

var registry = builder.AddAzureContainerRegistry("registry");

var cae = builder.AddAzureContainerAppEnvironment()
  .WithRegistry(registry);

• [ ] Figure out how to handle creating role assignments between the container apps and the ACR