Added CONTRIBUTING.md #8

CONTRIBUTING.md

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+<div align="center">
+  <h1>✨Contributors Guide — Quantum Gate Simulator & GUI Visualizer✨</h1>
+  <h3>
+    Welcome to the Quantum Gate Simulator & GUI Visualizer! 😍<br>
+    Thanks for your interest in contributing. 😊<br>
+    This guide will help you set up the project, run it locally, and make your first contribution.
+  </h3>
+</div>
+
+
+![Line](https://user-images.githubusercontent.com/85225156/171937799-8fc9e255-9889-4642-9c92-6df85fb86e82.gif)
+
+
+<h2><b>Ways to Contribute</b>b></h2>
+
+🐛 Report bugs: Use the issue template; include steps to reproduce, expected/actual behavior, OS/toolchain versions.
+
+💡 Request features: Describe the use case and (if relevant) any UI/UX ideas for the GUI.
+
+🧹 Improve docs: Clarify setup, add examples, or write tutorials.
+
+🧪 Add tests: Unit tests for gates/state evolution; e2e checks for the GUI.
+
+⚙️ Implement enhancements: Performance improvements, better numerics, new gates, or multi‑qubit support.
+
+Before large changes, please open a design discussion issue first.
+
+![Line](https://user-images.githubusercontent.com/85225156/171937799-8fc9e255-9889-4642-9c92-6df85fb86e82.gif)
+
+<h2><b>How to Contribute:</b></h2>
+
+⭐ Star this repository to show support.
+
+🧭 Check open Issues. If something interests you, comment to express intent.
+
+📝 Open an issue first (or use an existing one) describing what you plan to change. Wait to be assigned before writing code.
+
+🔀 Fork the repo and create a focused branch: [repo link](https://github.com/Dark-CodeX/qubitverse.git)
+
+🧪 Add tests and update docs alongside your change.
+
+🧹 Format & lint: run the provided scripts (C++: clang-format/tidy; GUI: prettier/eslint) and make sure all tests pass.
+
+🖼 If your PR affects the GUI, attach screenshots/GIFs. If it affects the simulator, include a short correctness note and, if relevant, a quick before/after performance snippet.
+
+🔗 Use Conventional Commits and link the issue in your PR description (e.g., Closes #123).
+
+📬 Open a Pull Request. The community will review and suggest improvements.
+
+⏳ Limits: please keep ≤ 3 active issues assigned per person and 1 PR per issue. Avoid opening PRs for issues you’re not assigned to.
+
+
+![Line](https://user-images.githubusercontent.com/85225156/171937799-8fc9e255-9889-4642-9c92-6df85fb86e82.gif)
+
+<h2><b>Helpful Resources (Git & GitHub):</b></h2>
+
+If you’re new to open source or GitHub, these official guides will get you moving quickly:
+
+📌 [Creating an Issue (or PR) with GitHub Desktop](https://help.github.com/en/desktop/contributing-to-projects/creating-an-issue-or-pull-request)
+
+🍴 [Fork a Repository](https://docs.github.com/en/get-started/quickstart/fork-a-repo)
+
+⬇️ [Clone Your Fork](https://docs.github.com/en/get-started/quickstart/fork-a-repo#cloning-your-forked-repository)
+
+🔁 [Create a Pull Request](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-a-pull-request)
+
+🚀 [Getting Started with Git & GitHub](https://docs.github.com/get-started)
+
+
+![Line](https://user-images.githubusercontent.com/85225156/171937799-8fc9e255-9889-4642-9c92-6df85fb86e82.gif)
+
+
+<h2 align="center">Tip from us 😇</h1>
+<p align="center">Every expert started at |0⟩ — apply one gate at a time and watch your skills evolve. You've got this! 💪</p>
+<h3 align="center">Show some &nbsp;❤️&nbsp; by &nbsp;🌟&nbsp; this repository!</h3>