Method addItem

UnitTests/UnitTest_MultiList/BiIndexData.h:24–27

		void insertItemAt(size_t _index, std::string_view _name, size_t _data);

		void addItem(std::string_view _name, size_t _data)
		{
			insertItemAt(MyGUI::ITEM_NONE, _name, _data);
		}

		void removeItemAt(size_t _index);