🐛 修复 get_message_id 被弃用的问题并简单修缮了代码格式 (#32)

Co-authored-by: sourcery-ai[bot] <58596630+sourcery-ai[bot]@users.noreply.github.com>
Co-authored-by: Akarin~ <60691961+Asankilp@users.noreply.github.com>

nonebot_plugin_marshoai/models.py

@@ -1,9 +1,8 @@
 import importlib
+import importlib.util
 import json
 import os
 import sys
-
-# import importlib.util
 import traceback
 
 from nonebot import logger
@@ -117,10 +116,12 @@ class MarshoTools:
                 spec = importlib.util.spec_from_file_location(
                     package_name, os.path.join(package_path, "__init__.py")
                 )
+                if not spec:
+                    raise ImportError(f"工具包 {package_name} 未找到")
                 package = importlib.util.module_from_spec(spec)
                 self.imported_packages[package_name] = package
                 sys.modules[package_name] = package
-                spec.loader.exec_module(package)
+                spec.loader.exec_module(package)  # type:ignore
 
                 logger.success(f"成功加载工具包 {package_name}")
             except json.JSONDecodeError as e: