run Pack Database Automatically
Sets whether database file packing occurs automatically. By default, the automatic database file packing is enabled.
If packing is enabled, database file packing occurs automatically after an offline region is deleted by calling OfflineRegion.delete or the ambient cache is cleared by calling OfflineManager.clearAmbientCache.
If packing is disabled, disk space will not be freed after resources are removed unless OfflineManager.packDatabase is explicitly called.
Parameters
autopack
flag setting the automatic database file packing.