chore: Update missing or outdated files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
• SECURITY.md file containing security reporting guidelines

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-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.12%. Comparing base (6f54d45) to head (e7f6164).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #51      +/-   ##
==========================================
+ Coverage   78.84%   80.12%   +1.27%     
==========================================
  Files          14       12       -2     
  Lines        1513     1092     -421     
  Branches      234      149      -85     
==========================================
- Hits         1193      875     -318     
+ Misses        262      189      -73     
+ Partials       58       28      -30     

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