docs: add contribution guidelines

Author: bujosa

CONTRIBUTION.md

@@ -0,0 +1,63 @@
+# Contribution Guide
+
+Thank you for your interest in contributing to our project! We welcome contributions from the community to help make this project better. Here are some ways you can contribute:
+
+## How to Contribute
+
+### Bug Fixes and Features
+
+- You can contribute to this project by:
+  - Fixing bugs in the codebase.
+  - Implementing new features or enhancements.
+
+### Problem Solving
+
+- Contribute to problem-solving efforts by:
+  - Resolving bugs or issues.
+  - Completing tasks or problems.
+  - Adding or improving problem descriptions.
+
+### Testing
+
+- Help improve the quality of our project by:
+  - Fixing or adding tests to ensure code reliability.
+
+## Getting Started
+
+To get started with contributing, follow these steps:
+
+1. Fork the repository on GitHub.
+
+2. Clone your forked repository to your local machine:
+
+   ```bash
+   git clone https://github.com/bujosa/leetcode-challenges-in-rust.git
+   ```
+
+3. Create a new branch for your changes:
+
+   ```bash
+    git checkout -b branch-name
+   ```
+
+4. Make your changes to the codebase.
+
+   using conventional commits
+
+   ```bash
+    git add . && git commit -m "feat: add new feature"
+   ```
+
+   or
+
+   ```bash
+    git add . && git commit -m "fix: fix bug"
+   ```
+
+5. Push your changes to your forked repository:
+
+   ```bash
+   git push origin branch-name
+   ```
+
+6. Submit a pull request to the `main` branch of the repository.