After downloading and importing the Unity Package, Mesh Terrain Builder will be installed as a UPM package
in the Packages directory along with the Mesh Terrain Core package.
To check if the packages are installed successfully, follow these steps:
1. Open the Unity Package Manager window by selecting Window > Package Manager.
2. Locate the Mesh Terrain Builder and Mesh Terrain Core packages in the list of packages.
3. You can now access the samples from the Project Window, under Packages/Mesh Terrain Builder/Samples folder.