Fix CLAP issue

Author: timothyschoen

build.py

@@ -114,4 +114,7 @@
 
             plugin_filename = name + extension;
             os.makedirs(target_dir, exist_ok=True)
-            shutil.copytree(os.path.join(format_path, plugin_filename), os.path.join(target_dir, plugin_filename))
+            if os.path.isdir(src):
+                shutil.copytree(os.path.join(format_path, plugin_filename), os.path.join(target_dir, plugin_filename))
+            else
+                shutil.copy2(os.path.join(format_path, plugin_filename), os.path.join(target_dir, plugin_filename))