docs(contributing): 📚️ add CONTRIBUTING.md

CONTRIBUTING.md

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+# Contributing
+
+Thank you for considering contributing to *Citizen*!
+
+*Citizen* is a small open-source project, and we really appreciate any help! Here are the areas that you can contribute to:
+
+- Code patches
+- Documentation improvements
+- Bug reports and fixes
+- Feature requests and suggestions
+- Translating into various languages*
+
+## How to submit a contribution
+
+If you would like to contribute to *Citizen*, follow these steps:
+
+1. [Fork](https://github.com/StarCitizenTools/mediawiki-skins-Citizen/fork) the *Citizen* repository.
+2. Create a new branch in your fork to make your changes.
+3. Commit your changes to your new branch.
+4. Push your changes to your fork on GitHub.
+5. Submit a pull request from your branch to the *Citizen* repository.
+
+We will review your pull request and, if everything looks good, merge it into the main codebase.
+
+## Translations
+You can submit translations via [TranslateWiki.net](https://translatewiki.net/w/i.php?title=Special:Translate&group=mwgithub-star-citizen). They are usually merged bi-weekly.
+
+## Questions
+
+If you have any questions about contributing to *Citizen*, feel free to [open an issue](https://github.com/StarCitizenTools/mediawiki-skins-Citizen/issues/new/choose) in the *Citizen* repository and ask. There are additional resources in the [GitHub wiki](https://github.com/StarCitizenTools/mediawiki-skins-Citizen/wiki) as well.