Create a custom Lidar message

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Hello everyone, I'm trying to create a neural model for detecting a docking station using a RPLidar A1. For these a created a lot of rosbag file which I converted to txt file and edited it to separated the data (I wanted to have only a scan of docking station, not the rest of the room). Right now I'm facing a problem with taking back the txt file into rosbag.

Below is the txt file as example

%time,
field.header.seq,
field.header.stamp,
field.header.frame_id,
field.angle_min,
field.angle_max,
field.angle_increment,
field.time_increment,
field.scan_time,
field.range_min,
field.range_max,

field.ranges0,field.ranges1,field.ranges2,field.ranges3,field.ranges4,field.ranges5,field.ranges6,
field.ranges7,field.ranges8,field.ranges9,field.ranges10,field.ranges11,field.ranges12,field.ranges13,field.ranges14,field.ranges15,field.ranges16,field.ranges17,field.ranges18,field.ranges19,
field.ranges20,field.ranges21,field.ranges22,field.ranges23,field.ranges24,field.ranges25,field.ranges26,field.ranges27,field.ranges28,field.ranges29,field.ranges30,field.ranges31,field.ranges32,
field.ranges33,field.ranges34,field.ranges35,field.ranges36,field.ranges37,field.ranges38,field.ranges39,field.ranges40,field.ranges41,field.ranges42,field.ranges43,field.ranges44,field.ranges45,
field.ranges46,field.ranges47,field.ranges48,field.ranges49,field.ranges50,field.ranges51,field.ranges52,field.ranges53,field.ranges54,field.ranges55,field.ranges56,field.ranges57,field.ranges58,
field.ranges59,field.ranges60,field.ranges61,field.ranges62,field.ranges63,field.ranges64,field.ranges65,field.ranges66,field.ranges67,field.ranges68,field.ranges69,field.ranges70,field.ranges71,
field.ranges72,field.ranges73,field.ranges74,field.ranges75,field.ranges76,field.ranges77,field.ranges78,field.ranges79,field.ranges80,field.ranges81,field.ranges82,field.ranges83,field.ranges84,
field.ranges85,field.ranges86,field.ranges87,field.ranges88,field.ranges89,field.ranges90,field.ranges91,field.ranges92,field.ranges93,field.ranges94,field.ranges95,field.ranges96,field.ranges97,
field.ranges98,field.ranges99,field.ranges100,field.ranges101,field.ranges102,field.ranges103,field.ranges104,field.ranges105,field.ranges106,field.ranges107,field.ranges108,field.ranges109,
field.ranges110,field.ranges111,field.ranges112,field.ranges113,field.ranges114,field.ranges115,field.ranges116,field.ranges117,field.ranges118,field.ranges119,field.ranges120,field.ranges121,
field.ranges122,field.ranges123,field.ranges124,field.ranges125,field.ranges126,field.ranges127,field.ranges128,field.ranges129,field.ranges130,field.ranges131,field.ranges132,field.ranges133,
field.ranges134,field.ranges135,field.ranges136,field.ranges137,field.ranges138,field.ranges139,field.ranges140,field.ranges141,field.ranges142,field.ranges143,field.ranges144,field.ranges145,
field.ranges146,field.ranges147,field.ranges148,field.ranges149,field.ranges150,field.ranges151,field.ranges152,field.ranges153,field.ranges154,field.ranges155,field.ranges156,field.ranges157,
field.ranges158,field.ranges159,field.ranges160,field.ranges161,field.ranges162,field.ranges163,field.ranges164,field.ranges165,field.ranges166,field.ranges167,field.ranges168,field.ranges169,
field.ranges170,field.ranges171,field.ranges172,field.ranges173,field.ranges174,field.ranges175,field.ranges176,field.ranges177,field.ranges178,field.ranges179,field.ranges180,field.ranges181,
field.ranges182,field.ranges183,field.ranges184,field.ranges185,field.ranges186,field.ranges187,field.ranges188,field.ranges189,field.ranges190,field.ranges191,field.ranges192,field.ranges193,
field.ranges194,field.ranges195,field.ranges196,field.ranges197,field ...