feat: Save objects states in Obj Manager to keep them btwn rooms (#554)

addons/escoria-core/game/scenes/sound/esc_music_player.gd

@@ -56,6 +56,7 @@ func _ready():
 	pause_mode = Node.PAUSE_MODE_STOP
 	escoria.object_manager.register_object(
 		ESCObject.new(global_id, self),
+		null,
 		true
 	)
 

addons/escoria-core/game/scenes/sound/esc_speech_player.gd

@@ -37,6 +37,7 @@ func _ready():
 	pause_mode = Node.PAUSE_MODE_STOP
 	escoria.object_manager.register_object(
 		ESCObject.new(global_id, self),
+		null,
 		true
 	)