Add contributing guidelines to CONTRIBUTING.md

Added guidelines for contributing to the project, including reporting issues, submitting pull requests, coding guidelines, and community expectations.

Author: Jay-28070

CONTRIBUTING.md

@@ -0,0 +1,56 @@
+# Contributing to Simple Interest Calculator
+
+Thank you for your interest in contributing to the Simple Interest Calculator project! We welcome contributions from developers of all levels and backgrounds. By participating in this project, you agree to adhere to our [Code of Conduct](CODE_OF_CONDUCT.md).
+
+## How to Contribute
+
+### Reporting Issues
+
+* Use the GitHub [Issues](https://github.com/your-username/simple-interest-calculator/issues) tab to report bugs or suggest enhancements.
+* Provide clear, concise, and reproducible steps.
+
+### Submitting Pull Requests
+
+1. Fork the repository to your account.
+2. Clone your fork locally:
+
+   ```bash
+   git clone https://github.com/your-username/simple-interest-calculator.git
+   cd simple-interest-calculator
+   ```
+3. Create a new branch for your feature or bug fix:
+
+   ```bash
+   git checkout -b my-feature-branch
+   ```
+4. Make your changes and commit them with clear, descriptive messages:
+
+   ```bash
+   git add .
+   git commit -m "Add new feature or fix description"
+   ```
+5. Push your branch to your fork:
+
+   ```bash
+   git push origin my-feature-branch
+   ```
+6. Open a pull request from your branch to the `main` branch of the original repository.
+
+### Coding Guidelines
+
+* Follow consistent code formatting and naming conventions.
+* Write clear and concise comments where necessary.
+* Ensure your code does not break existing functionality.
+
+### Code Reviews
+
+* Pull requests will be reviewed by maintainers.
+* Be open to feedback and make revisions as requested.
+
+### Community
+
+* Respect all community members.
+* Engage positively in discussions.
+* Follow the [Code of Conduct](CODE_OF_CONDUCT.md) at all times.
+
+Thank you for helping improve the Simple Interest Calculator project!