Enhance T2 Offload for gNB and UE

- Reworked nrLDPC_decoder_offload.c to process all segments in a TB with a single call to LDPCdecoder() or LDPCencoder().
- Perform CRC checks on the T2.
- Modified nr_ulsch_decoding (gNB decoder) to:
  - Count processed segments.
  - Properly perform CRC checks.
- Created a constant NR_LDPC_MAX_NUM_CB to define the maximum number of codeblocks.
- Conditional library loading:
  - On gNB: Load ldpc_t2 library if offload is enabled using the --ldpc-offload-enable flag.
  - On UE: Load both ldpc_t2 and ldpc libraries since only encoder offload is supported.
- General cleanup of nrLDPC_decoder_offload.c for improved readability and maintainability.
- Modified the structure of LDPC encoder/decoder/offload parameters:
  - Introduced a structure for code block (CB) related parameters.
  - Removed parameter E from the encoder and offload parameter structures for clarity.
  - Replaced E with perCB->E_cb in the UE encoder code.

executables/nr-uesoftmodem.h

@@ -37,6 +37,7 @@
   {"dlsch-parallel",           CONFIG_HLP_DLSCH_PARA,          0,               .u8ptr=NULL,                              .defintval=0,                    TYPE_UINT8,    0}, \
   {"offset-divisor",           CONFIG_HLP_OFFSET_DIV,          0,               .uptr=&nrUE_params.ofdm_offset_divisor,   .defuintval=8,                   TYPE_UINT32,   0}, \
   {"max-ldpc-iterations",      CONFIG_HLP_MAX_LDPC_ITERATIONS, 0,               .iptr=&nrUE_params.max_ldpc_iterations,   .defuintval=8,                  TYPE_UINT8,    0}, \
+  {"ldpc-offload-enable",      CONFIG_HLP_LDPC_OFFLOAD,        PARAMFLAG_BOOL,  .iptr=&(nrUE_params.ldpc_offload_flag),   .defintval=0,                   TYPE_INT,      0}, \
   {"nr-dlsch-demod-shift",     CONFIG_HLP_DLSHIFT,             0,               .iptr=(int32_t *)&nr_dlsch_demod_shift,   .defintval=0,                    TYPE_INT,      0}, \
   {"V" ,                       CONFIG_HLP_VCD,                 PARAMFLAG_BOOL,  .iptr=&vcdflag,                           .defintval=0,                    TYPE_INT,      0}, \
   {"uecap_file",               CONFIG_HLP_UECAP_FILE,          0,               .strptr=&uecap_file,                      .defstrval="./uecap_ports1.xml", TYPE_STRING,   0}, \
@@ -80,6 +81,7 @@ typedef struct {
   int nb_antennas_tx;
   int            N_RB_DL;
   int            ssb_start_subcarrier;
+  int ldpc_offload_flag;
 } nrUE_params_t;
 extern uint64_t get_nrUE_optmask(void);
 extern uint64_t set_nrUE_optmask(uint64_t bitmask);