loadAllLeaderboards
Call this method and subscribe to the emitted signal to receive all leaderboards for the game in JSON format. The JSON received from the com.jacobibanez.plugin.android.godotplaygameservices.signals.LeaderboardSignals.allLeaderboardsLoaded signal, contains a list of elements representing the com.google.android.gms.games.leaderboard.Leaderboard class.
Parameters
forceReload
If true, this call will clear any locally cached data and attempt to fetch the latest data from the server.