Added debug to I2CuHal2 to indicate when a slave fails to ACKNOWLEDGE (useful to see if a device is responding at all). Also started to expande the functions available for the LCD09052 display.

In Python scripts, added code to control the PMT voltage using a steering card in the config file. Same name used in EUDAQ. Also added a INI steering card (vCtrlMax) used to define the maximum control voltage for the PMTs. This is only needed for powermodules specifically hacked, like the one for Thomas Bergauer.

Hopefully all right.

Added packages for chips used in the SFP fanout (DUNE). I should put those in a separate repository.

Basic LED control now working. Use pwdled.setIndicatorRGB(XX, [A, B, C]) to set indicator XX to RGB components A, B, C.