增加保存配置信息到文件的功能，声音设置、显示设置、关卡选择等配置信息在修改后将会保存在jar包同级目录下(以jar相同的文件名+.cfg后缀保存)-Save the configuration information to a function to increase the file, sound settings, display settings, level selection after modifying the configuration information will be stored in the same directory jar package (in jar+.cfg the same file name extension to save)