added seed document with code mapping

seed files/product_category_code_definition.csv

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+Category code,Description
+dj,Light
+xdd,Ceiling light
+fwd,Ambiance light
+dc,String lights
+dd,Strip lights
+gyd,Motion sensor light
+fsd,Ceiling fan light
+tyndj,Solar light
+tgq,Dimmer
+ykq,Remote control
+kg,Switch
+pc,Power strip
+cz,Socket
+cjkg,Scene switch
+ckqdkg,Card switch
+clkg,Curtain switch
+ckmkzq,Garage door opener
+tgkg,Dimmer switch
+rs,Water heater
+xfj,Ventilation system
+bx,Refrigerator
+yg,Bathtub
+xy,Washing machine
+kt,Air conditioner
+ktkzq,Air conditioner controller
+bgl,Wall-hung boiler
+sd,Robot vacuum
+qn,Heater
+kj,Air purifier
+lyj,Drying rack
+xxj,Diffuser
+cl,Curtain
+mc,Door/window controller
+wk,Thermostat
+yb,Bathroom heater
+ggq,Irrigator
+jsq,Humidifier
+cs,Dehumidifier
+fs,Fan
+js,Water purifier
+dr,Electric blanket
+cwtswsq,Pet treat feeder
+cwwqfsq,Pet ball thrower
+ntq,HVAC
+cwwsq,Pet feeder
+cwysj,Pet fountain
+sf,Sofa
+dbl,Electric fireplace
+tnq,Smart milk kettle
+msp,Cat toilet
+mjj,Towel rack
+sz,Smart indoor garden
+bh,Smart kettle
+mb,Bread maker
+kfj,Coffee maker
+nnq,Bottle warmer
+cn,Milk dispenser
+mzj,Sous vide cooker
+mg,Rice cabinet
+dcl,Induction cooker
+kqzg,Air fryer
+znfh,Bento box
+mal,Alarm host
+sp,Smart camera
+sgbj,Siren alarm
+zd,Vibration sensor
+mcs,Contact sensor
+rqbj,Gas alarm
+ywbj,Smoke alarm
+wsdcg,Temperature and humidity sensor
+sj,Water leak detector
+ylcg,Pressure sensor
+ldcg,Luminance sensor
+sos,Emergency button
+pm2.5,PM2.5 detector
+pir,Human motion sensor
+cobj,CO detector
+co2bj,CO2 detector
+dgnbj,Multi-functional alarm
+jwbj,Methane detector
+hps,Human presence sensor
+ms,Residential lock
+bxx,Safe box
+gyms,Business lock
+jtmspro,Residential lock pro
+hotelms,Hotel lock
+ms_category,Lock accessories
+jtmsbh,Smart lock (keep alive)
+mk,Access control
+videolock,Lock with camera
+photolock,Audio and video lock
+amy,Massage chair
+liliao,Physiotherapy product
+ts,Smart jump rope
+tzc1,Body fat scale
+sb,Watch/band
+zndb,Smart electricity meter
+znsb,Smart water meter
+dlq,Circuit breaker
+ds,TV set
+tyy,Projector
+tracker,Tracker
+znyh,Smart pill box