Add: fake module PIL for webui (#4374)

* Add: fake module PIL for webui

* Fix: Load runtime before module PIL

* Upd: Error message of MAA loading failure

* Upd: Adjust timing of import fake module

module/webui/app.py

@@ -1,12 +1,18 @@
-import argparse
+import sys
 import json
-import queue
-import threading
 import time
+import queue
+import argparse
+import threading
+
 from datetime import datetime
 from functools import partial
 from typing import Dict, List, Optional
 
+# Import fake module before import pywebio to avoid importing unnecessary module PIL
+from module.webui.fake_pil_module import import_fake_pil_module
+import_fake_pil_module()
+
 from pywebio import config as webconfig
 from pywebio.input import file_upload, input, input_group, select
 from pywebio.output import (