Circuit serialization as parameters of the tomography

[Edoardo-Pedicillo]

This PR is a patch to solve the serialization of Circuit parameters, like in state tomographies (this happens with the scripts). Maybe a better solution would be to define a dump method specific for each parameter class and call it directly in the action dump method.

Checklist:

• Reviewers confirm new code works as expected.
• Tests are passing.
• Coverage does not decrease.
• Documentation is updated.
• Compatibility with Qibo modules (Please edit this section if the current pull request is not compatible with the following branches).
  • Qibo: master
  • Qibolab: 0.1.9
  • Qibolab_platforms_qrc: main

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 3 lines in your changes missing coverage. Please review.

Project coverage is 97.45%. Comparing base (2a7062c) to head (14acf17).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
src/qibocal/auto/task.py	66.66%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1002      +/-   ##
==========================================
- Coverage   97.52%   97.45%   -0.07%     
==========================================
  Files         123      123              
  Lines        9714     9723       +9     
==========================================
+ Hits         9474     9476       +2     
- Misses        240      247       +7     

Flag	Coverage Δ
unittests	97.45% <66.66%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/qibocal/auto/task.py	96.31% <66.66%> (-1.74%)	⬇️

... and 2 files with indirect coverage changes

[alecandido]

@Edoardo-Pedicillo we will eventually move to Pydantic serialization even in Qibocal (it's a waste of time to maintain our own, when there is a high-quality maintained library doing that).

If your solution is working, for the time being is more than enough.

[alecandido]

Either use with open(...) as fd: or use circuit_file.write_text(json.dumps(...)). You should close file descriptors, and better doing it automatically than manually.