create taurus_k320_mac

[david0]

mac seems to have ^ and < keys swapped and seem to use backslash instead of non_us_pound

mac build-in keyboard:

^ key: 64h
>< key: 35h

# (right of Ä key): 31h instead of 32h

This overview matches what I observed with the build-in-mac-keyboard: https://iks.cs.ovgu.de/~elkner/keyboard/mac/scancodes_MBP.html#kbdByScancode