CHORE: Update missing or outdated files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-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.85%. Comparing base (65db261) to head (7f525b8).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8763   +/-   ##
=======================================
  Coverage   79.85%   79.85%           
=======================================
  Files           4        4           
  Lines         134      134           
=======================================
  Hits          107      107           
  Misses         27       27           

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