Feat: Copy several files to destination directory (optionally)

Editor/IO/Files/CopyFilesToDirectory.cs

@@ -0,0 +1,40 @@
+using System.IO;
+using System.Threading.Tasks;
+using UnityEditor;
+using UnityEngine;
+
+namespace UniTools.Build
+{
+    [CreateAssetMenu(
+        fileName = nameof(CopyFilesToDirectory),
+        menuName = MenuPaths.IO + nameof(CopyFilesToDirectory)
+    )]
+    public sealed class CopyFilesToDirectory : BuildStep
+    {
+        [SerializeField] private PathProperty[] m_filePaths = default;
+        [System.Obsolete, HideInInspector]
+        [SerializeField] private PathProperty m_filePath = default;
+        [SerializeField] private PathProperty m_destination = default;
+
+        public override async Task Execute()
+        {
+            foreach (var filePath in m_filePaths)
+            {
+                string fileName = Path.GetFileName(filePath.ToString());
+                string dest = Path.Combine(m_destination.ToString(), fileName);
+                FileUtil.DeleteFileOrDirectory(dest);
+                FileUtil.CopyFileOrDirectory(filePath.ToString(), dest);
+            }
+
+            await Task.CompletedTask;
+        }
+
+        private void OnValidate()
+        {
+            if (m_filePaths.Length == 0 && !string.IsNullOrEmpty(m_filePath.ToString()))
+            {
+                m_filePaths = new[] { m_filePath };
+            }
+        }
+    }
+}