Email sending tool (#3837)

### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._
Added the function of sending emails through SMTP
Instructions for use-
Corresponding parameters need to be configured
Need to output upstream in a fixed format

![image](https://github.com/user-attachments/assets/93bc1af7-6d4f-4406-bd1d-bc042535dd82)


### Type of change


- [√] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

agent/component/__init__.py

@@ -31,6 +31,8 @@ from .akshare import AkShare, AkShareParam
 from .crawler import Crawler, CrawlerParam
 from .invoke import Invoke, InvokeParam
 from .template import Template, TemplateParam
+from .email import Email, EmailParam
+
 
 
 def component_class(class_name):