First you need the latest traktor pro version 2.11 which cdj2000nxs2 supports now, install latest driver and firmware for djm for windows. If all recognizes in traktor, your cdj's in HID mode and your djm mixer as soundcard your good to go. I think just map it by yourself is better for you own workflow if your feeling lazy then just go here
https://traktorbible.com/freaks/mappingone.aspx?id=122
maybe you can find mappings for your djm in other sites I don't know, just download the .tsi, import in traktor, set your prefer audio channels in output routing in traktor and try the mappings.