Remove hardcoding of PTRS parameters and read from gNB config file
This changes in this MR remove hardcoding of DL and UL PTRS parameters at gNB and NR UE. The parameters are now read from the gNB config file and updated in RRC configuration. The UE gets these values from reconfig.raw. A new section for Dedicated Serving Cell Config (servingCellConfigDedicated) is added to gNB config file.