[Feature] AKS List Available VM SKUs

Users can call the [AKS List Available VM SKUs](https://learn.microsoft.com/en-us/cli/azure/aks?view=azure-cli-latest#az-aks-list-vm-skus) API to retrieve an updated list of AKS supported VM sizes in their Azure subscription and truncate this list with parameters like --location (Azure region availability) to enable faster and more successful AKS cluster and node pool creation.

Feature documentation: [AKS List Available VM SKUs (preview)](https://learn.microsoft.com/en-us/azure/aks/aks-list-skus)
Status: This feature is currently available in public preview.