Merge branch 'RU-RAU-split' of https://gitlab.eurecom.fr/oai/openairinterface5g into RU-RAU-split

cmake_targets/CMakeLists.txt

openair1/PHY/INIT/defs.h

openair1/PHY/LTE_TRANSPORT/prach.c

openair1/PHY/LTE_TRANSPORT/pucch.c

openair1/SCHED/phy_procedures_lte_eNb.c

openair1/SCHED/ru_procedures.c

openair2/ENB_APP/enb_app.c

openair2/ENB_APP/enb_config.h

openair2/LAYER2/MAC/config.c

openair2/LAYER2/MAC/eNB_scheduler_primitives.c

openair2/LAYER2/MAC/eNB_scheduler_ulsch.c

openair2/LAYER2/MAC/proto.h

openair2/LAYER2/MAC/ra_procedures.c

openair2/LAYER2/PDCP_v10.1.0/pdcp_fifo.c

openair2/LAYER2/RLC/UM_v9.3.0/rlc_um_control_primitives.c

openair2/RRC/LITE/MESSAGES/asn1_msg.c

openair2/RRC/LITE/proto.h

openair2/RRC/LITE/rrc_UE.c

openair2/UTIL/CLI/cli.c

openair2/UTIL/CLI/cli_cmd.c