Bug: listHostsMetrics response mapping mismatch (hostmetrics --> host) causes null parsing.

The CloudStack backend response for listHostsMetrics has changed its JSON structure, but the cloudstack-go wrapper is still parsing the old field (hostmetrics).
This results in host metrics being returned as null in the Go SDK response.

Affected Component

API: listHostsMetrics (command)

Client: github.com/apache/cloudstack-go/v2

Version tested: v2.19.0 (and likely later)

Key change:
The backend now returns metrics under the field host, not hostmetrics.
Go SDK should correctly deserialize host metrics into a non-nil slice.

Actual SDK Behavior currently
{
"count": 3,
"host": null
}

Please rectify.

Start by inspecting the cloudstack-go v2 wrapper for the listHostsMetrics API and its response mapping. Confirm the mapping against the backend field described in the issue, then verify that the SDK returns a non-nil host metrics slice; linked pull request #137 indicates that work is already underway.

Written by the indexing model from the issue text.