feat: add korean contributing.md translation

[jokj624]

Description

Created korean contributing.md guide and translate it.

Contribution Checklist:

• [x] The pull request only addresses one issue or adds one feature.
• [x] The pull request does not introduce any breaking changes
• [ ] I have added screenshots or gifs to help explain the change if applicable.
• [x] I have read the contribution guidelines.
• [ ] Create an issue and link to the pull request.

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