Create CODE_OF_CONDUCT.md (#12105)

code of conduct.md file is missing it is generally present in good repos
which have large community

Replace this entire comment with:
- **Description:** Added a `code_of_conduct.md` file to the repository
to establish community standards and guidelines for contributors.
- **Issue:** N/A
- **Dependencies:** N/A
- **Tag maintainer:** N/A

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Co-authored-by: Eugene Yurtsev <[email protected]>