feat(contributing) Scaffold

CONTRIBUTING.md

+# Contributing to [Project Name]
+
+We welcome contributions to [The European Digital Identity Wallet Architecture and Reference Framework](README.md) Whether it's fixing a bug, proposing a new feature, or improving documentation, we appreciate any and all contributions that can help make [Project Name] better.
+
+## How to contribute
+
+1. Fork the repository and make your changes in a separate branch.
+3. Submit a pull request to the `main` branch.
+4. The pull request will be reviewed and potentially merged.
+
+## Guidelines
+
+* Follow the existing style and conventions.
+* Document any addition or changes to existing text.
+* Proofread your copy thoroughly before submitting a pull request.
+* Keep your pull request focused on one specific change or fix.
+
+## Code of Conduct
+
+We expect all contributors to abide by our [Code of Conduct](link) (pending). Please make sure you are familiar with its contents before contributing.
+
+## License
+
+By contributing to [The European Digital Identity Wallet Architecture and Reference Framework], you agree that your contributions will be licensed under the [Project's License](LICENSE).