docs: add Contributor Covenant v3.0 Code of Conduct

Author: bsayli

CODE_OF_CONDUCT.md

@@ -0,0 +1,29 @@
+# Code of Conduct
+
+## Our Pledge
+We pledge to make our community welcoming, safe, and equitable for all.
+
+We are committed to fostering an environment that respects and promotes the dignity, rights, and contributions of all individuals, regardless of characteristics including race, ethnicity, caste, color, age, neurodiversity, disability, gender identity or expression, sexual orientation, language, religion, nationality, or social origin.
+
+## Encouraged Behaviors
+We strive to:
+- Engage kindly and honestly with others.
+- Respect different viewpoints and experiences.
+- Take responsibility for our actions and contributions.
+- Gracefully give and accept constructive feedback.
+- Commit to repairing harm when it occurs.
+
+## Restricted Behaviors
+The following behaviors are unacceptable:
+- Harassment, personal attacks, or discrimination of any kind.
+- Sharing private information without consent.
+- Sexualized language, imagery, or unwelcome attention.
+- Endangerment or threats of violence.
+- Misleading identity or impersonation.
+
+## Reporting an Issue
+If you experience or witness unacceptable behavior, please report it by opening an issue or contacting the maintainer at **baris.sayli@gmail.com**.
+Reports will be handled promptly and confidentially.
+
+## Attribution
+This Code of Conduct is adapted from the [Contributor Covenant v3.0](https://www.contributor-covenant.org/version/3/0/code_of_conduct/), licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).