w mx / Mbed 2 deprecated wmx_laser

于之前基础上增加功能：py启动后输入缩放比例，十秒内未输入，则初始化后重启py，方可按默认设置执行

Dependencies:   MQTT SDFileSystem WIZnet_Library mbed

Fork of Laser_SD_W5500 by YX ZHANG

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