message: implement current_user_queue fn
diff: @@ -53,6 +53,11 @@ pub struct CurrentPlaybackContext {
  pub currently_playing_type: CurrentlyPlayingType,
  pub actions: Actions,
  }
  +#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
  +pub struct CurrentUserQueue {
  + pub currently_playing: Option<PlayableItem>,
  + pub queue: Vec<PlayableItem>
  +}
  /// Actions object
  #[derive(Clone, Debug, Serialize, PartialEq, Eq, Default)]
  