feat: add vm power actions

platform/proxmox/client.go

@@ -163,6 +163,36 @@ func (c *Client) GetTaskStatus(ctx context.Context, node string, upid string) (T
 	}, nil
 }
 
+func (c *Client) PowerVM(ctx context.Context, node string, vmid int, action string) (string, error) {
+	response, err := c.Post(ctx, fmt.Sprintf(
+		"/nodes/%s/qemu/%d/status/%s",
+		url.PathEscape(node),
+		vmid,
+		url.PathEscape(action),
+	), nil)
+	if err != nil {
+		return "", err
+	}
+	defer response.Body.Close()
+
+	if response.StatusCode >= http.StatusBadRequest {
+		_, _ = io.Copy(io.Discard, response.Body)
+		return "", fmt.Errorf("proxmox returned %s", response.Status)
+	}
+
+	var body struct {
+		Data string `json:"data"`
+	}
+	if err := json.NewDecoder(response.Body).Decode(&body); err != nil {
+		return "", err
+	}
+	if body.Data == "" {
+		return "", fmt.Errorf("proxmox response missing UPID")
+	}
+
+	return body.Data, nil
+}
+
 func (c *Client) Do(ctx context.Context, method string, path string, body []byte) (*http.Response, error) {
 	var lastErr error
 	attempts := c.retries + 1