FEAT: Circuit configuration extension refactoring

[Samuelopez-ansys]

Description

Migrate to new common class and implement unit test.

Issue linked

Close #6362

Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate tests (unit, integration, system).
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved by the PR if any.
• I have agreed with the Contributor License Agreement (CLA).

[ansys-reviewer-bot]

Thanks for opening a Pull Request. If you want to perform a review write a comment saying:

@ansys-reviewer-bot review

[codecov]

Codecov Report

Attention: Patch coverage is 72.60274% with 20 lines in your changes missing coverage. Please review.

Project coverage is 75.55%. Comparing base (ebd0ebb) to head (39bf922).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6417      +/-   ##
==========================================
- Coverage   82.83%   75.55%   -7.29%     
==========================================
  Files         176      176              
  Lines       66944    66973      +29     
==========================================
- Hits        55454    50600    -4854     
- Misses      11490    16373    +4883     

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.