重构代码以使用 mofox_wire 替代 mofox_bus，更新相关文档和示例

src/plugin_system/apis/send_api.py

@@ -92,7 +92,7 @@ import traceback
 import uuid
 from typing import TYPE_CHECKING, Any
 
-from mofox_bus import MessageEnvelope
+from mofox_wire import MessageEnvelope
 from src.common.data_models.database_data_model import DatabaseUserInfo
 if TYPE_CHECKING:
     from src.common.data_models.database_data_model import DatabaseMessages