chore: Update missing or outdated files

[pyansys-automation]

The following files were added or updated:

• CODE_OF_CONDUCT.md file containing the contributor covenant code of conduct
• CONTRIBUTING.md file with contribution guidelines specific to the repository

Important

Replace {project-name} with the name of the project in the CONTRIBUTING.md file. For example, the project name for ansys/pymechanical is PyMechanical.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.36%. Comparing base (9124545) to head (60943b6).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2352      +/-   ##
==========================================
+ Coverage   95.32%   95.36%   +0.03%     
==========================================
  Files         168      168              
  Lines       11101    11101              
==========================================
+ Hits        10582    10586       +4     
+ Misses        519      515       -4     

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