chore: Update missing or outdated files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]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.76%. Comparing base (08f700f) to head (7a2f1fe).
⚠️ Report is 11 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #920   +/-   ##
=======================================
  Coverage   94.76%   94.76%           
=======================================
  Files           7        7           
  Lines         802      802           
=======================================
  Hits          760      760           
  Misses         42       42           

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