added winning determination algorithm (not entirely working yet)

elements/player_hand.gd

@@ -41,6 +41,7 @@ func add_cards(card_ids: Array[int], client_id: String) -> void:
 
 func remove_card(card: PlayingCard) -> void:
 	self.remove_child(card)
+	card.queue_free()
 	_arrange_cards()
 
 func _arrange_cards() -> void:
@@ -78,6 +79,7 @@ func _on_play_card_button_pressed() -> void:
 		return
 	
 	card_played.emit(_selected_card.card_details.card_id)
-	_selected_card.unselect()
+	remove_card(_selected_card)
+	#_selected_card.unselect()
 	_selected_card = null
 	card_selected.emit(-1)