[build] update PyInstaller hiddenimports and py2exe modules

scripts/hook-gallery_dl.py

@@ -1,11 +1,20 @@
 # -*- coding: utf-8 -*-
 
 from gallery_dl import extractor, downloader, postprocessor
+import os
 
 hiddenimports = [
-    package.__name__ + "." + module
+    f"{package.__name__}.{module}"
     for package in (extractor, downloader, postprocessor)
     for module in package.modules
 ]
 
+base = extractor.__name__ + ".utils."
+path = os.path.join(extractor.__path__[0], "utils")
+hiddenimports.extend(
+    base + file[:-3]
+    for file in os.listdir(path)
+    if not file.startswith("__")
+)
+
 hiddenimports.append("yt_dlp")