fix: 修复SQLite数据库初始化和关闭逻辑\n\n- 更新 main.py: 修复数据库初始化条件，支持sqlite选项\n- 更新 db.py: 添加SQLite数据库初始化和关闭支持

main.py

@@ -50,13 +50,13 @@ async def main():
     await cmd_arg.parse_cmd()
 
     # init db
-    if config.SAVE_DATA_OPTION == "db":
+    if config.SAVE_DATA_OPTION in ["db", "sqlite"]:
         await db.init_db()
 
     crawler = CrawlerFactory.create_crawler(platform=config.PLATFORM)
     await crawler.start()
 
-    if config.SAVE_DATA_OPTION == "db":
+    if config.SAVE_DATA_OPTION in ["db", "sqlite"]:
         await db.close()