Renames io as connection; renames mux_2023_rev_0_0 and mux_2024_rev_0_0 as mux_2023_0_X and mux_2024_0_X; renames ohmpi_card_3_15 as mb_2023_0_X

Fixes issue with naming raspberry_pi controller; Fixes computation of sp correction in test_measure_ohmpi_card_3_15.py

Improves abstract hardware; Adds vab_square_wave to measure; Adds soh logger; Adds first modifications to OhmPi