[devscripts] Provide pyinstaller hooks

Closes #6185

yt_dlp/__pyinstaller/hook-yt_dlp.py

@@ -0,0 +1,29 @@
+import sys
+
+from PyInstaller.utils.hooks import collect_submodules
+
+
+def _pycryptodome_module():
+    try:
+        import Cryptodome  # noqa: F401
+    except ImportError:
+        try:
+            import Crypto  # noqa: F401
+            print('WARNING: Using Crypto since Cryptodome is not available. '
+                  'Install with: pip install pycryptodomex', file=sys.stderr)
+            return 'Crypto'
+        except ImportError:
+            pass
+    return 'Cryptodome'
+
+
+def _hidden_imports():
+    yield 'yt_dlp.compat._legacy'
+    for m in [_pycryptodome_module(), 'websockets']:
+        yield from collect_submodules(m)
+    # These are auto-detected, but explicitly add them just in case
+    yield from ('mutagen', 'brotli', 'certifi')
+
+
+hiddenimports = list(_hidden_imports())
+excludedimports = ['youtube_dl', 'youtube_dlc', 'test', 'ytdlp_plugins', 'devscripts']