Hello Jashan.
Yes, it is part of CW - it is included in CW folder.
You can find it under features in CW folder.
Please, take a look at User Guide and Reference Manual for MQXLite.
C:\Freescale\<CW_installation_package>\MCU\Help\PDF\MQXLite_User_Guide.pdf
C:\Freescale\<CW_installation_package>\MCU\Help\PDF\MQXLite_RM.pdf
I hope this helps.
Best Regards,
Iva