[Request]: Can we have a stable interface for querying the amount of memory that is being used by the underlying virtual machine.

### Feature or enhancement request details

`container stats` only reports the memory that is being used by the processes in the container, not the amount that the container uses/claims from the host, which can be found by checking the memory used by the corresponding `com.apple.Virtualization.VirtualMachine` process ( `Virtual Machine Service for container-runtime-linux` in the Active Monitor).

Obtaining this number is a little cumbersome. I'm using `lsof` on `com.apple.Virtualization.VirtualMachine` to see what directory it opens in `~/Library/Application Support/com.apple.container/containers/` to get the container UUID.

Can we add a stable interface to it someway somewhere? Or is there already better ways of accomplishing this?

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct

Start with the existing `container stats` command and investigate how it identifies containers under `~/Library/Application Support/com.apple.container/containers/`. Compare its process-level reporting with the `com.apple.Virtualization.VirtualMachine` process and determine what stable interface could expose host memory usage; done means the requested value is available without `lsof` or process inspection.

Written by the indexing model from the issue text.