fix elapsed timer on new round

scripts/game.gd

@@ -33,6 +33,7 @@ var game_ended=false
 
 # Called when the node enters the scene tree for the first time.
 func _ready() -> void:
+	Gamestate.resetTimeElapsed()
 	countdown.start()
 	countdown_label.visible=true
 	

scripts/gamestate.gd

@@ -56,3 +56,6 @@ func addTimeElapsed(delta):
 	
 func getTimeElapsed():
 	return time_elapsed
+
+func resetTimeElapsed():
+	time_elapsed=0