DOCS: Add information about coverage and local_config

[eblanco-ansys]

Description

• Added documentation for unit testing in VsCode and PyCharm
• Added local_config and settings documentation

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 83.48%. Comparing base (51a6d85) to head (1cb9470).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6681      +/-   ##
==========================================
- Coverage   83.48%   83.48%   -0.01%     
==========================================
  Files         245      245              
  Lines       77503    77503              
==========================================
- Hits        64706    64702       -4     
- Misses      12797    12801       +4     

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[Devin-Crawford]

LGTM

[Devin-Crawford]

LGTM