RTK信息增加一个rtcm数据长度字段

endian11

2021-02-03 94764c8945a50e0758ab448d5601a22caa6a73fe

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{"road_slide_yellow_distance":0.1,"road_slide_red_distance":0.3,"road_pause_criteria":2000,"crash_dotted_line_cumulative_time":10,"continuous_change_lane_min_time":10,"change_lane_limit_distance":100}