DelegateParameterWithSetpoints

[astafan8]

todo:

• bind_to_instrument
• inherit unit and label
• Take care of the cache, e.g. Disable it :)
• Smarter handling of validators - create new validators for the delegates with the same shape as source parameters if the provided delegate parameters dont exist.
• Let the user pass instances of DelegateParameter for each setpoint, giving full flexibility to the users
• test all behavior

[codecov]

Codecov Report

Merging #3849 (68d2870) into master (cf8dbc0) will decrease coverage by 0.05%.
The diff coverage is 29.54%.

❗ Current head 68d2870 differs from pull request most recent head 9b30a35. Consider uploading reports for the commit 9b30a35 to get more accurate results

@@            Coverage Diff             @@
##           master    #3849      +/-   ##
==========================================
- Coverage   65.64%   65.59%   -0.06%     
==========================================
  Files         228      228              
  Lines       31033    31077      +44     
==========================================
+ Hits        20371    20384      +13     
- Misses      10662    10693      +31     

[astafan8]

@jenshnielsen i'd like to re-target and re-base this branch when we move to "main" in qcodes