Merge remote-tracking branch 'origin/support-15-kHz-SCS' into integration_2022_wk21b

cmake_targets/autotests/test_case_list.xml

common/utils/threadPool/thread-pool.h

executables/nr-ru.c

openair1/PHY/INIT/nr_init.c

openair1/PHY/INIT/nr_init_ue.c

openair1/PHY/MODULATION/nr_modulation.c

openair1/PHY/MODULATION/slot_fep_nr.c

openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c

openair1/PHY/NR_REFSIG/pss_nr.h

openair1/PHY/NR_REFSIG/ptrs_nr.c

openair1/PHY/NR_REFSIG/ptrs_nr.h

openair1/PHY/NR_TRANSPORT/nr_prach.c

openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c

openair1/PHY/NR_UE_TRANSPORT/nr_prach.c

openair1/PHY/NR_UE_TRANSPORT/pss_nr.c

openair1/PHY/TOOLS/tools_defs.h

openair1/PHY/defs_gNB.h

openair1/PHY/defs_nr_UE.h

openair1/SIMULATION/NR_PHY/dlsim.c

openair1/SIMULATION/NR_PHY/prachsim.c