LaMetric missing configuration "icon_type"

Currently, LaMetric notifications display an icon representing the nature of notification before announcing the intended message. However an option to change or disable this would be preferred.

The option is available in the API, https://lametric-documentation.readthedocs.io/en/latest/reference-docs/device-notifications.html#display-notification.

Current integration docs, https://www.home-assistant.io/integrations/lametric/

Current configuration.yaml

notify:
  name: NOTIFIER_NAME
  platform: lametric
  lifetime: 20
  icon: a7956
  cycles: 3
  priority: info

Example change:

notify:
  name: NOTIFIER_NAME
  platform: lametric
  lifetime: 20
  icon: a7956
  cycles: 3
  priority: info
  icon_type: none