完成所有设置数据从本地json文件的获取，

endian11

2020-10-26 844af51bfcd8c4dadd1782a7fb7df3f2274807ac

1
{"road_total_distance":3000,"road_max_speed":3,"stop_car_open_door_allow_time":15,"stop_car_limit_distance":150,"stop_car_edge_red_distance":0.5,"stop_car_edge_yellow_distance":0.3}