improvements of the ITest driver including:

[simonzihlmann]

• initializing the DAC is not changing any outputs by default (there is a flag to reset it to 0V and 12 range)
• ramping is now by default in exponential mode to be consistent with the idea of ramping qcodes parameters (step, inter_delay, post_delay)
• implementation of autorange parameter
• global zeroing and printing functions

[codecov-commenter]

Codecov Report

Merging #242 (0146ea6) into main (6f07646) will decrease coverage by 0.04%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #242      +/-   ##
==========================================
- Coverage   19.90%   19.86%   -0.04%     
==========================================
  Files         139      139              
  Lines       17428    17459      +31     
==========================================
  Hits         3469     3469              
- Misses      13959    13990      +31     

Files Changed	Coverage Δ
qcodes_contrib_drivers/drivers/Bilt/ITest.py	0.00% <0.00%> (ø)

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