Samanthaho/registered parameter snapshot

[samantha-ho]

This PR adds a new category to the dataset snapshot. Previously, when a qcodes Measurement ran, only the station snapshot was saved. The parameters directly involved in the measurement were not explicitly snapshotted, and if those parameters were not part of the station, metadata about them could be lost.

The dataset snapshot dictionary now contains a new top-level key, "parameters" in addition to the original "station" key. Under parameters, there are snapshots of all parameters registered in the Measurement.

[codecov]

Codecov Report

Attention: Patch coverage is 90.47619% with 2 lines in your changes missing coverage. Please review.

Project coverage is 69.33%. Comparing base (07080a8) to head (7ebd8ba).
Report is 39 commits behind head on main.

Files with missing lines	Patch %	Lines
src/qcodes/dataset/measurements.py	89.47%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6487   +/-   ##
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  Coverage   69.32%   69.33%           
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  Files         340      340           
  Lines       31226    31240   +14     
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+ Hits        21648    21659   +11     
- Misses       9578     9581    +3     

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[trevormorgan]

Nice addition!