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".:

adding ldpctest encoder, decoder and ldpctest to CMakeLists.txt
activating the TCL LDPC decoder in the LDPC testbench but only works for largest blocksize 8448 for now.

adding ldpctest encoder, decoder and ldpctest to CMakeLists.txt
activating the TCL LDPC decoder in the LDPC testbench but only works for largest blocksize 8448 for now.

Procedures based on 38.213 ch.13 and ch.10, 38.211 ch.7.
 - Type0-PDCCH search space
 - Type0-PDCCH coreset

NR_LTE_UE_REUSE_LIB: set of files need to be update from LTE to NR version.