This repo contains some scripts to add wind to any tree and grass in Unity, built-in render pipeline only, needs Unity 2019.3 or newer to fully work. It's a continuation of this thread: https://forum.unity.com/threads/how-to-add-wind-to-custom-trees-grass-in-unity-using-tree-creator-shaders.871126/
You can download the .unitypackage here: https://github.com/marcb152/Wind-Creator/releases