SpiNNaker 2 Communications

[rowleya]

The development of the code to interact with a SpiNNaker 2 board using the UDP to NOC protocol.

[Christian-B]

test c+ tests found at https://gitlab.com/spinnaker2/s2-sim2lab-app/-/tree/main/host/units/s2_top/tc_s2app_arm_sanity_eth and https://gitlab.com/spinnaker2/s2-sim2lab-app/-/tree/main/host/units/s2_top/tc_s2app_arm_sanity_eth