Merge branch '97-calculate-checksum-for-tcp-data-also' into '93-network-processor'

.../sub/network_processor/sim/cocotb/tests/scapy_irl_test.py

...6502_fpga/src/sub/network_processor/src/tcp_dest_decap.sv

...pga/src/sub/network_processor/src/tcp_packet_generator.sv

...per6502_fpga/src/sub/network_processor/src/tcp_rx_ctrl.sv

...2_fpga/src/sub/network_processor/src/tcp_state_manager.sv

...uper6502_fpga/src/sub/network_processor/src/tcp_stream.sv

...per6502_fpga/src/sub/network_processor/src/tcp_tx_ctrl.sv

init_env.sh