REFACTOR: Conftest refactoring and local_config cleaning

[eblanco-ansys]

Description

• Removed unused and outdated local config parameters
• Unified conftest files. Now there all the common configs are nested stating from tests/conftest.py
• Removed a lot of redundant code

Missing

• Add docs section explain local_config.json parameters

Issue linked

#6474

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).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.31%. Comparing base (508e354) to head (0807b82).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6727   +/-   ##
=======================================
  Coverage   83.31%   83.31%           
=======================================
  Files         246      246           
  Lines       77436    77436           
=======================================
  Hits        64518    64518           
  Misses      12918    12918           

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[SMoraisAnsys]

Thanks for the contribution @eblanco-ansys. It's a good idea to leverage PYAEDT_LOCAL_SETTINGS_PATH for testing since that's one of the way we promote to setup PyAEDT. I also like the fact of having a single location to change every test behavior. However, I think this changes have been discussed in the past and there was a request to have conftest files for every test folder in order to finely configure just a subset of tests. Maybe things have evolved and the team would agree to a single location for setting everything (I'm voting for it) but it needs to be discussed too :)

[Devin-Crawford]

Great!

[SMoraisAnsys]

LGTM, I left a minor comment where only 1 fixture was not modified and the rest got refactored