LDPC encoding/decoding offload to the T2 card

This MR consists of 3 main parts:

• removal of the T1 related code
• cleanup and refactor of the LDPC encoder/decoder interface between OAI main code and the CPU, GPU, FPGA
• add LDPC encoder/decoder offload to the T2 card with DPDK/bbdev API

Verification of the T2 LDPC encoder/decoder functionality with OAI:

• physical simulators --> OK
  • tested with nr_ulsim and nr_dlsim for different MCS, SNR and TB size
• rfsim (without retransmissions) --> OK
  • test setup: single OAI UE, 40 MHz BW, DDSUU
  • ping, UL&DL UDP and TCP iperf test - similar throughput results as for OAI CPU encoder/decoder
• OTA --> occasional blocking of the card
  • test setup: single UE (Quectel RM500Q), USPR N310, 60 MHz BW, DDSUU
  • ping, UL&DL UDP and TCP iperf test
  • tested for 2000s, separately with UL TCP iperf and DL TCP iperf without blocking of the card

Current issues and limitations (to be addressed in future commits/MRs):

• T2 LDPC encoder used for MCS > 2, not functional for MCS < 2.
• Card gets stuck after an unparedictable amount of time.
  • blocking in the decoder function, reset of the card required
  • reproducable in rfsim (with retransmissions only), OTA single and multi UE scenario
• T tracer dependency issue

fatal error: T_IDs.h: No such file or directory

• ldpctest with cuda fails

GPUassert: invalid argument /home/oaicicd/jaroslava/test_t2/openair1/PHY/CODING/nrLDPC_decoder_LYC/nrLDPC_decoder_LYC.cu 481