feat(translations): add translations for light_mode entity type
- standardize devices that provide the feature of configuring an
indicator light on a switch panel to show in different conditions.
- on = always on
- off = always off
- state = follows the state of the switch
- pos = inverted state (for locating light switches in the dark)
- standardize the icon to a ring, as that is how 99% of such lights appear.
Issue #1708