Using ul_dmrs_symb_pos at UE side instead of assuming that DMRS is only present at 1st symbol of PUSCH

definition of config request fapi structures in UE and acquisition from rrc of config data (work in progress)

Testing of NR PDCCH/PDSCH with RRC Configuration. added RRC configuration to NR UE. Updates to UE DCI procedures (moved to MAC) and updates to FAPI interfaces for UE. nr_dlsim is functional, added profiling information for gNB TX.

nr-ip-over-LTE: Resolved issue with duplicate IP packet at the receiver UE IP interface and packet losses are reduced. Remaining to identify why occasionally IP packets are received at the PDCP stack later than the time slot of their arrival at PHY/MAC. Introduced some debug logs, to be removed later.

however, I had to hardcode the parameters for the PUSCH in nr_ulsim as the fapi interface still has bugs.

 - dci_request and dl_indication for PBCH now also on stack
 - fixed type of nrUE_config (was using structure for gNB before)
 - added configuration of PBCH to phy_config_request and using this config now in phy_procedures_nr_ue
 - we need to add configuration of PDCCH and PDSCH also to phy_config_request (there are still some hardcoded parameters)
 - removed UL scheduling for now

Final --phy_simulators warning removals for this branch, and former polar coding function corrections

removing printfs

first version of UE FAPI handling for DLSCH. paramters from DCI are now handled by MAC and passed back to the PHY to program PDSCH. Still need to check parameters and take them into account in PHY.

adding function dci_req for UE
disabling handle_dci for now

hardcoding N_PRB of PDCCH in UE MAC (was in UE PHY before). This is still a temporary solution until UE FAPI is correctly done. But at least it decodes the DCI again.
fixing some warinings

BWP information in NFAPI gNB/UE
dci encoding / decoding integrated
DCI decoding still fails

UE: Add FAPI structure clean by every slot, update UL_CONFIG_REQ for PRACH, DL_CONFIG_REQ for DL-SCH and filling PHY parameter "dlsch", "dlsch_harq".: