fix(core): refactor md files

CONTRIBUTING.md

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+# 🤝 Contributing to Bjorn
+
+We welcome contributions to Bjorn! To make sure the process goes smoothly, please follow these guidelines:
+
+## 📋 Code of Conduct
+
+Please note that all participants in our project are expected to follow our [Code of Conduct](#-code-of-conduct). Make sure to review it before contributing.
+
+## 🛠 How to Contribute
+
+1. **Fork the repository**:
+   Fork the project to your GitHub account using the GitHub interface.
+
+2. **Create a new branch**:
+   Use a descriptive branch name for your feature or bugfix:
+
+   git checkout -b feature/your-feature-name
+
+3. **Make your changes**:
+   Implement your feature or fix the bug in your branch. Make sure to include tests where applicable and follow coding standards.
+
+4. **Test your changes**:
+   Run the test suite to ensure your changes don’t break any functionality:
+
+   - ...
+5. **Commit your changes**:
+   Use meaningful commit messages that explain what you have done:
+
+   git commit -m "Add feature/fix: Description of changes"
+
+6. **Push your changes**:
+   Push your changes to your fork:
+
+   git push origin feature/your-feature-name
+
+7. **Submit a Pull Request**:
+   Create a pull request on the main repository, detailing the changes you’ve made. Link any issues your changes resolve and provide context.
+
+## 📑 Guidelines for Contributions
+
+- **Lint your code** before submitting a pull request. We use [ESLint](https://eslint.org/) for frontend and [pylint](https://www.pylint.org/) for backend linting.
+- Ensure **test coverage** for your code. Uncovered code may delay the approval process.
+- Write clear, concise **commit messages**.
+
+Thank you for helping improve!
+
+---
+
+## 📜 License
+
+2024 - Bjorn is distributed under the MIT License. For more details, please refer to the [LICENSE](LICENSE) file included in this repository.