feat: Add a channelized driver for the Harvard DAC

Commits a channelized version of the Harvard DecaDAC driver
using the new channelization implementation. Note that this driver
at the present time also fixes a number of open bugs in the previous
driver, including occasional crashes (microsoft#546), incorrectly reading
DAC voltages (microsoft#563), reset (microsoft#478).

This commit also adds a number of new features to the driver
including:
- Feature and version detection
- Access to calibrated high-resolution mode of DAC
- Parameter read from memory
- Validation of writes