ProjectFoldersCreator.cs

using System.Collections.Generic;
using UnityEditor;
using UnityEngine;
using static System.IO.Directory;
using static System.IO.Path;
using static UnityEditor.AssetDatabase;

public class ProjectFoldersCreator
{
    [MenuItem("Genial Studios/Create Default Folders")]
    static void CreateDefaultFolders()
    {
        List<string> directoriesNames = new() { "Animations", "Audios", "Fonts", "Inputs", "Materials", "Models", "Plugins", "Prefabs", "Scenes", "ScriptableObjects", "Shaders", "Scripts", "Textures", "URP" };
        string projectPath = Combine(Application.dataPath, "_Project");
        CreateDirectoriesFromList(projectPath, directoriesNames);

        directoriesNames = new() { "Editor", "Serializables", "UI" };
        string scriptsPath = Combine(projectPath, "Scripts");
        CreateDirectoriesFromList(scriptsPath, directoriesNames);

        directoriesNames = new() { "Test" };
        string scenesPath = Combine(projectPath, "Scenes");
        CreateDirectoriesFromList(scenesPath, directoriesNames);
        Refresh();
    }

    static void CreateDirectoriesFromList(string root, List<string> directoriesNames)
    {
        for (int i = 0; i < directoriesNames.Count; i++)
        {
            string directoryPath = Combine(root, directoriesNames[i]);
            if (Exists(directoryPath)) continue;
            CreateDirectory(directoryPath);
        }
    }
}