objected knowledge base implement for email code structure

src/service/email_spider/main.py

@@ -0,0 +1,12 @@
+import asyncio
+from .spider import EmailSpider, EmailConverter
+
+
+if __name__ == "__main__":
+    spider = EmailSpider("smtp.163.com","user","pwd","./email")
+    asyncio.run(spider.run())
+
+    converter = EmailConverter("./email",KnowledgeBase())
+    asyncio.run(converter.run())
+
+