Add contributing guidelines

CONTRIBUTING.md

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+# CONTRIBUTING OVERVIEW
+
+[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](http://makeapullrequest.com) [![Open Source Love](https://badges.frapsoft.com/os/v1/open-source.png?v=103)](https://github.com/ellerbrock/open-source-badges/) [![License](https://img.shields.io/github/license/web3community/devprotocol.xyz)](https://github.com/web3community/devprotocol.xyz/blob/main/LICENSE)
+
+
+*👍🎉 First off, thanks for taking the time to contribute! 🎉👍*
+
+
+The following is a set of guidelines for contributing to this repository. These are mostly guidelines, not rules. Use your best judgment, and feel free to propose changes to this document in a pull request.
+
+
+## 🚀 How to Contribute:
+
+- Please create an [issue](https://github.com/web3community/devprotocol.xyz/issues) first before creating a Pull request.
+
+- Fork the Repo and create a Branch for any Issue that you are working upon.
+
+- Create a Pull Request which will be promptly reviewed and suggestions would be added to improve it.
+
+- Add Screenshots to help us know what changes you have done.  
+
+## 🤔 How to make a Pull Request:
+
+**1.** Fork [this](https://github.com/web3community/devprotocol.xyz) repository. Click on the <a  href="https://github.com/web3community/devprotocol.xyz"><img  src="https://img.icons8.com/fluency/30/000000/code-fork.png"/></a> symbol at the top right corner.
+
+**2.** Clone the forked repository.
+```bash
+git clone https://github.com/<your-username>/devprotocol.xyz.git
+```
+
+**3.** Navigate to the project directory.
+```bash
+cd devprotocol.xyz
+```
+
+**4.** Create a new branch:
+```bash
+git checkout -b your-branch-name
+```
+
+**5.** Make the necessary changes in source code.
+
+**6.** Stage your changes and commit
+```bash
+git add .
+git commit -m "<your_commit_message>"
+```
+*You can use appropriate emojis for your commit messages from [Gitmoji](https://gitmoji.dev/)*
+
+**7.** Push your local commits to the remote repo.
+```bash
+git push origin your-branch-name
+```
+
+**8.** Create a new [Pull Request](https://help.github.com/en/github/collaborating-with-issues-and-pull-requests/creating-a-pull-request) from ```your-branch-name```
+
+**9.** 🎉 Congratulations! You've made your contribution.
+
+## Hacktoberfest Guidelines:
+
+#### Good Practice
+- Comment on the issue to get assigned
+- Create an issue before you make a Pull Request
+
+#### Bad Practice
+- Creating Pull Requests without Issue assignment will not be accepted and will be closed
+
+After this, project maintainers will review the changes and will merge your PR if they found it good, otherwise we will suggest the required changes.
+
+## Web3Community
+
+😕 Not sure where to start? Join our community on [Discord](https://discord.gg/37QFQ7J78B)
+✨ You can also take part in [Community Discussion](https://github.com/web3community/devprotocol.xyz/discussions)