SDAP Initial Implementation

cmake_targets/CMakeLists.txt

common/utils/LOG/log.c

common/utils/LOG/log.h

common/utils/T/T_messages.txt

doc/FEATURE_SET.md

openair2/COMMON/platform_types.h

openair2/LAYER2/nr_pdcp/nr_pdcp_entity.c

openair2/LAYER2/nr_pdcp/nr_pdcp_entity.h

openair2/LAYER2/nr_pdcp/nr_pdcp_oai_api.c

openair2/LAYER2/nr_pdcp/nr_pdcp_oai_api.h

openair2/LAYER2/nr_pdcp/nr_pdcp_ue_manager.c

openair2/RRC/NR/rrc_gNB.c

openair2/SDAP/nr_sdap/nr_sdap.c

openair2/SDAP/nr_sdap/nr_sdap.h

openair2/SDAP/nr_sdap/nr_sdap_entity.c

openair2/SDAP/nr_sdap/nr_sdap_entity.h

openair2/SDAP/nr_sdap/nr_sdap_gnb.c

openair3/ocp-gtpu/gtp_itf.cpp