Add readme file

Author: theEvilReaper

assets/flutter_template/README.md

@@ -0,0 +1,12 @@
+## Vulpes Data
+
+This repository is part of the **Vulpes** project and contains various Minecraft data generated using a CLI tool written in Dart.  
+Not all data is included, as it is extracted from the [Minestom](https://github.com/Minestom/Minestom) server software, and some data types are not yet supported.
+
+### Important Notes
+
+This project is automatically generated by the [Stelaris CLI](https://github.com/OneLiteFeatherNET/stelaris-cli) tool.  
+If you encounter bugs or have suggestions for improvement, please open an issue in the **Stelaris CLI repository**, not here.
+
+You are free to modify the generated data in your own fork. 
+However, keep in mind that every time an update is released, you’ll need to manually merge your changes to stay up to date.