Add asdf-godot plugin to "Other Stuff" section

I've created an [asdf](https://github.com/asdf-vm/asdf) plugin to manage multiple versions of Godot, allowing users to easily switch between stable and pre-release versions. This is useful for testing pre-releases or ensuring specific projects use a fixed Godot version via the `.tool-versions` file in the project root. Would this repository be a suitable place to list the plugin, perhaps under the *Other Stuff* section? ### Plugin Repository: 🔗 [mkungla/asdf-godot](https://github.com/mkungla/asdf-godot) ### Example Usage: `.tool-versions` file in a project root or in user home for global version ``` godot 4.4-beta2 ```