small changes for multiple lcid handling in gNB scheduler. PUSCH DTX handling and suspension of scheduling when UL failure is detected

small changes for multiple lcid handling in gNB scheduler. PUSCH DTX handling and suspension of scheduling when UL failure is detected

With the merge of fix_NR_DLUL_PF, gNB_dlsch_ulsch_scheduler() has no
nb_periods_per_frame variable. There are two changes here:

1) calculate this locally for initializing tdd_beam_association

2) do not pass it into schedule_nr_mib(). Further, use the following:
   nb_periods_per_frame = slots_per_frame / slots_per_period
   slots_per_frame / nb_periods_per_frame =
     = slots_per_frame / (slots_per_frame / slots_per_period)
     = slots_per_period

configuration of SRB1 for monolithic and CU/DU, move some parameters from RRC to MACRLC section in configuration file.

reworking of MAC functions to schedule SSBs, including VRB map occupation and get_type0_PDCCH_CSS_config_parameters

* add the RA process to handle to command parameters
* Do not create the RAR_pdu into an intermediate array, but directly
  into the nFAPI TX_req
* Slightly restructure nr_generate_Msg2() to first make AssertFatal()
  checks, then proceed allocating

- To check the current slot is the scheduled slot(UL slot - K2) and
  only execute the post processor in scheduled slot.