Adds Contributing Guidance

CONTRIBUTING.md

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+# Contribution guidelines
+
+Thank you for your interest in contributing to the PnP PowerShell VS Code extension. In this guide, we will walk you through the steps to get started.
+
+## 👉 Before you start
+
+In order to help us process your contributions, please make sure you do the following:
+
+- don't surprise us with big PR's. Instead create an issue & start a discussion so we can agree on a direction before you invest a large amount of time.
+- create your branch from `main`. This will make it easier for us to merge your changes.
+- submit PR to the `main` branch of this repo. PRs submitted to other branches will be declined.
+- let us know what's in the PR: sometimes code is not enough and in order to help us understand your awesome work please follow the PR template to provide required information.
+- don't commit code you didn't write. Sure Copilot may help 😉.
+
+Do not be afraid to ask question. We are here to help you succeed in helping us making a better product.
+
+## 👣 How to start - Minimal path to awesome
+
+- Fork this project.
+- Clone the forked repository
+- In the cloned repository, run the npm install command: `npm i`. Please be aware the recommended node version is 18.17.X or higher.
+- Open the project in Visual Studio Code
+- Run the build command: `npm run vscode:prepublish`
+- Press `F5` to start the extension
+
+## ❓ More guidance and tips
+
+For more contributing guidance and tips and technical documentation of this extension please go to the repo [wiki](https://github.com/pnp/vscode-pnp-powershell/wiki).

SUPPORT.md

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+# Support
+
+Here you may find how to get support for PnP PowerShell VS Code extension.
+
+## 🧾 Code of Conduct
+
+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
+For more information, see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [[email protected]](mailto:[email protected]) with any additional questions or comments.
+
+
+## 🙏 Asking for help
+
+There are a few different ways to ask for help:
+
+1. Use **GitHub Issues** to report bugs or request a new feature 👉[Issues](https://github.com/pnp/vscode-pnp-powershell/issues/new/choose) section of this repository.
+3. Use **Discord** to chat with the community and the maintainers 👉 [Discord](https://aka.ms/community/discord)
+
+## 🙋‍♂️ Contributing
+
+If you would like to contribute to PnP PowerShell VS Code extension, please read our [contributing guide](./CONTRIBUTING.md).