Create CONTRIBUTING.md

Author: mdabir1203

CONTRIBUTING.md

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+# Contributing to Rust Modular Projects
+
+Welcome to the Rust Modular Projects! We're excited that you're interested in contributing. Before you get started, please take a moment to read through this guide.
+
+## Table of Contents
+- [Code of Conduct](#code-of-conduct)
+- [Getting Started](#getting-started)
+- [Pull Request Process](#pull-request-process)
+- [Testing Guidelines](#testing-guidelines)
+- [Security](#security)
+
+## Code of Conduct
+
+This project adheres to the Rust Code of Conduct. By participating, you are expected to uphold this code. Please report unacceptable behavior to [[email protected]].
+
+## Getting Started
+
+1. **Fork the Repository**
+   ```bash
+   git clone https://github.com/YOUR-USERNAME/rust-modular-projects.git
+   cd rust-modular-projects
+   git remote add upstream https://github.com/mdabir1203/rust-modular-projects.git
+   ```
+
+2. **Set Up Development Environment**
+   - Install Rust via rustup: https://rustup.rs/
+   - Required dependencies:
+     ```bash
+     rustup component add rustfmt
+     rustup component add clippy
+     cargo install cargo-audit
+     ```
+
+3. **Create a Branch**
+   ```bash
+   git checkout -b feature/your-feature-name
+   ```
+
+## Development Workflow
+
+1. **Keep Your Fork Updated**
+   ```bash
+   git fetch upstream
+   git rebase upstream/main
+   ```
+
+2. **Run Tests Locally**
+   ```bash
+   cargo test
+   cargo clippy
+   cargo fmt --all -- --check
+   ```
+
+3. **Commit Guidelines**
+   - Use conventional commits format:
+     - feat: New feature
+     - fix: Bug fix
+     - docs: Documentation changes
+     - style: Code style changes
+     - refactor: Code refactoring
+     - test: Test updates
+     - chore: Maintenance tasks
+
+   Example:
+   ```
+   feat(auth): implement JWT authentication
+   
+   - Add JWT token generation
+   - Implement token validation
+   - Add unit tests for auth module
+   ```
+
+## Pull Request Process
+
+1. **Before Submitting**
+   - Update documentation if needed
+   - Add tests for new features
+   - Ensure all tests pass
+   - Update CHANGELOG.md if applicable
+
+2. **PR Template**
+   ```markdown
+   ## Description
+   [Describe your changes]
+
+   ## Type of Change
+   - [ ] Bug fix
+   - [ ] New feature
+   - [ ] Breaking change
+   - [ ] Documentation update
+
+   ## Testing
+   - [ ] Tests added/updated
+   - [ ] All tests passing
+
+   ## Screenshots (if applicable)
+   ```
+
+## Coding Standards
+
+1. **Rust Style Guidelines**
+   - Follow Rust API Guidelines: https://rust-lang.github.io/api-guidelines/
+   - Use `rustfmt` for consistent formatting
+   - Run `clippy` and address all warnings
+
+
+3. **Documentation**
+   - All public items must have doc comments
+   - Include examples in doc comments
+   - Use proper Rust documentation syntax
+   ```rust
+   /// Performs an operation.
+   ///
+   /// # Examples
+   ///
+   /// ```
+   /// let result = my_function(42);
+   /// assert_eq!(result, 84);
+   /// ```
+   pub fn my_function(input: i32) -> i32 {
+       // Implementation
+   }
+   ```
+
+## Testing Guidelines
+
+1. **Unit Tests**
+   - Write tests for all public functions
+   - Use descriptive test names
+   - Follow arrange-act-assert pattern
+
+   ```rust
+   #[cfg(test)]
+   mod tests {
+       use super::*;
+
+       #[test]
+       fn test_function_expected_behavior() {
+           // Arrange
+           let input = 42;
+
+           // Act
+           let result = my_function(input);
+
+           // Assert
+           assert_eq!(result, expected_value);
+       }
+   }
+   ```
+
+2. **Integration Tests**
+   - Place in `tests/` directory
+   - Test module interactions
+   - Include error cases
+
+## Documentation
+
+1. **API Documentation**
+   - Use `cargo doc` to generate documentation
+   - Include examples
+   - Document error conditions
+   - Add links to related items
+
+2. **README Updates**
+   - Keep installation instructions current
+   - Update feature list
+   - Maintain troubleshooting section
+
+## Security
+
+1. **Reporting Security Issues**
+   - Email security concerns to [[email protected]]
+   - Do not create public issues for security vulnerabilities
+
+2. **Security Best Practices**
+   - Use `cargo audit` regularly
+   - Keep dependencies updated
+   - Follow Rust security guidelines
+   - Avoid unsafe code unless absolutely necessary
+
+## Support
+
+Need help? You can:
+- Open an issue
+- Email the maintainers
+
+Thank you for contributing to Rust Modular Projects! 🦀