feat: add a code of conduct file

CODE_OF_CONDUCT.md

@@ -0,0 +1,47 @@
+# YimMenu Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors pledge to make participation in our community a harassment-free experience for everyone, regardless of age, ethnicity, programming experience, race, gender and sexual identity, etc. As a rule of thumb, any comment that isn't relevant to the menu or the contributions at hand is prohibited
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+* Treating everyone with respect and cordiality
+* Welcoming new contributors
+* Being respectful of differing viewpoints
+* Focusing on what is best for the project
+
+Examples of unacceptable behavior by participants include:
+
+* Trolling
+* Talking about politics (or using political imagery, including images of Pepe and Wojaks)
+* Racial slurs
+* Using avatars that show apparent affiliations to extremist organizations
+* Harassment
+* Doxxing
+* Opening pull requests containing leaked or otherwise copyrighted code
+* Promoting unrelated personal projects
+* Attempting to recruit contributors
+* Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently *any* contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, including this repository and on the [Matrix server](https://matrix.to/#/#yimmenu:matrix.org).
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior should be reported in the Matrix room. If you violate this code of conduct, you will be banned, *even if you otherwise make decent contributions to the project*
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant](https://www.contributor-covenant.org), version 1.4, available at <https://www.contributor-covenant.org/version/1/4/code-of-conduct.html>
+
+For answers to common questions about this code of conduct, see <https://www.contributor-covenant.org/faq>