Create CODE_OF_CONDUCT.md

[italolelis]

Adds code of conduct to the project.

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

[codecov-commenter]

Codecov Report

Merging #38 (74c8173) into main (6fb13e5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #38   +/-   ##
=======================================
  Coverage   36.95%   36.95%           
=======================================
  Files          12       12           
  Lines         368      368           
=======================================
  Hits          136      136           
  Misses        230      230           
  Partials        2        2           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 6fb13e5...74c8173. Read the comment docs.