Support Azure CLI authentication

[comtalyst]

What would you like to be added:

Authentication through Azure CLI credentials, similar to https://github.com/kubernetes/autoscaler/pull/4295/files.
Note that that part of autoscaler used to share the code with this cloud-provider-azure. Thus, required changes here should be similar to that PR.

Why is this needed:

This additional authentication method should ease the development process for projects that use cloud-provider-azure, such as Cluster Autoscaler.
In fact, from the above PR, it already exists in autoscaler, but through forking means. Other components would benefit from that as well if we add it here. Not to mention better code organization between Cluster Autoscaler and cloud-provider-azure (i.e., we don't have to do surgery on the code like this and can rely more on abstraction).

In addition, newer DefaultAzureCredential() seems to include this auth method as well: https://github.com/Azure/azure-sdk-for-go/blob/main/sdk/azidentity/README.md#defaultazurecredential. Maybe that's being used for track2 already?