This commit contains work done by Eurecom and by Benetel.

additional 50% speed improvement with SIMD vectors

testing for pucch format 2, 3-11 bits. Configuration works for 2 PRBs, 1 symbol only. Assertion in gNB RX otherwise.

hotfix: replacing msg with printf in unitary simulators (msg(...) was replaced with LOG_D(PHY,...) but it was used before log was initialized)

this commit includes pucch format0 receiver and testbench for pucch format0 without ofdm. Also it has some fixes to pucch_nr.c