feat: Propagate media player attribute media_position_updated_at

Relates to unfoldedcircle/feature-and-bug-tracker#443

Author: zehnm

CHANGELOG.md

@@ -8,8 +8,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 _Changes in the next release_
 
+### Added
+- Propagate media player attribute `media_position_updated_at`.
+
 ### Fixed
 - Media player `media_type` attribute value should be upper case to match entity documentation.
+
 ### Changed
 - update README and driver description ([#67](https://github.com/unfoldedcircle/integration-home-assistant/pull/67)).
 

src/client/entity/media_player.rs

@@ -56,6 +56,7 @@ pub(crate) fn map_media_player_attributes(
         }
         json::move_value(ha_attr, &mut attributes, "is_volume_muted", "muted");
         json::move_entry(ha_attr, &mut attributes, "media_position");
+        json::move_entry(ha_attr, &mut attributes, "media_position_updated_at");
         json::move_entry(ha_attr, &mut attributes, "media_duration");
         json::move_entry(ha_attr, &mut attributes, "media_title");
         json::move_entry(ha_attr, &mut attributes, "media_artist");