调整目录结构，将框架内容放到base里面

plugins/stats_collector/main.py

@@ -1,12 +1,10 @@
 from loguru import logger
-import time
 from typing import Dict, Any, Tuple, Optional, List
-from datetime import datetime
 
-from plugin_common.plugin_interface import PluginInterface, PluginStatus
-from event_system.event_manager import EventManager
+from base.plugin_common.plugin_interface import PluginInterface, PluginStatus
+from base.event_system.event_manager import EventManager
 # 使用正确的事件类型导入
-from event_system.events.plugin_events import PluginCallStartEvent, PluginCallEndEvent, PluginCallErrorEvent
+from base.event_system.events.plugin_events import PluginCallStartEvent, PluginCallEndEvent, PluginCallErrorEvent
 # 数据库导入
 from db.stats_db import StatsDBOperator
 from db.connection import DBConnectionManager