Enhance README.md with detailed sections on installation, add-ons, support, and licensing

Author: jeppestaerk

README.md

@@ -1,3 +1,46 @@
 # Staerk Home Assistant Add-ons
 
+[![License][license-shield]][license]
+
+## About
+
+Home Assistant add-ons repository by Jeppe Stærk. These add-ons extend the functionality of your Home Assistant installation.
+
+## Installation
+
+Click the button below to add this repository to your Home Assistant instance:
+
 [![Open your Home Assistant instance and show the add add-on repository dialog with a specific repository URL pre-filled.](https://my.home-assistant.io/badges/supervisor_add_addon_repository.svg)](https://my.home-assistant.io/redirect/supervisor_add_addon_repository/?repository_url=https%3A%2F%2Fgithub.com%2Fstaerk-ha-addons%2Frepository)
+
+Or use the following URL to add this repository:
+
+```txt
+https://github.com/staerk-ha-addons/repository
+```
+
+## Add-ons
+
+### ✨ [Technitium DNS Server](./technitium-dns)
+
+![Latest Version][technitium-version-shield]
+![Supports aarch64 Architecture][aarch64-shield]
+![Supports amd64 Architecture][amd64-shield]
+
+A powerful and flexible DNS server for Home Assistant with advanced features like DNS-over-HTTPS, DNS-over-TLS, and DNS blocking.
+
+## Support
+
+Got questions?
+
+- Create an issue on GitHub for bug reports, feature requests, or questions
+- Add a ⭐️ [star on GitHub](https://github.com/staerk-ha-addons/repository) to support the project
+
+## License
+
+MIT License - Copyright (c) 2025 Jeppe Stærk
+
+[aarch64-shield]: https://img.shields.io/badge/aarch64-yes-green.svg
+[amd64-shield]: https://img.shields.io/badge/amd64-yes-green.svg
+[license]: https://github.com/staerk-ha-addons/repository/blob/main/LICENSE
+[license-shield]: https://img.shields.io/github/license/staerk-ha-addons/repository.svg
+[technitium-version-shield]: https://img.shields.io/badge/version-v0.1.0-blue.svg