add contrib file

CONTRIBUTING.md

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+# 🌍 Contributing.
+
+Contributions are welcome, and they are greatly appreciated! Every little bit helps, and credit will always be given.
+
+## 👶 Getting Started!
+
+Ready to contribute? Here's how to set up `the-algorithm-ml` for local development.
+
+1. Fork the `the-algorithm-ml` repo on GitHub.
+2. Clone your fork locally:
+
+```sh
+git clone git@github.com:your_name_here/the-algorithm-ml.git
+```
+
+3. Navigate to the recently created directory:
+
+```sh
+cd the-algorithm-ml
+```
+
+4. Install Required dependencies:
+
+```sh
+pip install --no-deps -r images/requirements.txt
+```
+
+5. Work on your local changes.
+
+6. Test your local changes:
+
+```sh
+pytest -vv
+```
+
+7. Install `pre-commit` as a git hook:
+
+```sh
+pre-commit install
+```
+
+8. Create a branch for local development:
+
+```sh
+git checkout -b name-of-your-bugfix-or-feature
+```
+
+9. Commit your changes and push your branch to GitHub:
+
+```sh
+git add .
+git commit -m "Your detailed description of your changes."
+git push origin name-of-your-bugfix-or-feature
+```
+
+10. Submit a pull request through the GitHub website.
+
+## 📙 Pull Request Guidelines.
+
+Before you submit a pull request, check that it meets these guidelines:
+
+1. You must sign our CLA (Contributor License Agreement) upon opening a PR.
+2. The pull request should include tests, if applicable.
+
+Thank you for helping us improve!