feat(notify): support wecom group bot notification

[mapxn]

支持新的通知方式：企业微信群机器人

Refs: #2655，#2753 ，#2661

感谢 @lizheming 的指导，现已加入对企业微信群机器人的支持。

参考：企业微信群机器人 开发文档

已通过本地测试，并更新了官方文档。

[mapxn]

本次改动如下：

1. 添加了新的环境变量：WECOM_GROUP_WEBHOOK，用于自定义企业微信群机器人webhook链接（注:Wecom为企业微信的官方英文名称）。
2. 添加了新的调用函数wecomgroup，用于发送通知。
3. 添加对应的文档说明。

具体改动见 Files Changed

测试日志如下：

/workspace/waline (main) $ node ./packages/server/vanilla.js
[2025-01-16T02:02:30.107] [1250] [INFO] - Server running at http://127.0.0.1:8360
[2025-01-16T02:02:30.108] [1250] [INFO] - ThinkJS version: 3.2.15
[2025-01-16T02:02:30.109] [1250] [INFO] - Environment: production
[2025-01-16T02:02:30.109] [1250] [INFO] - Workers: 1
(node:1261) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
[2025-01-16T02:02:50.355] [1261] [DEBUG] - Post Comment Start!
[2025-01-16T02:02:50.355] [1261] [DEBUG] - Post Comment initial Data: {
  link: 'test.com',
  mail: '[email protected]',
  nick: '张三',
  pid: undefined,
  rid: undefined,
  ua: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36',
  url: '/',
  comment: '评论测试',
  ip: '114.94.77.73',
  insertedAt: '2025-01-16T02:02:50.355Z',
  user_id: undefined
}
[2025-01-16T02:02:50.356] [1261] [DEBUG] - Comment IP 114.94.197.23 check OK!
[2025-01-16T02:02:50.441] [1261] [DEBUG] - Comment duplicate check OK!
[2025-01-16T02:02:50.807] [1261] [DEBUG] - Comment post frequency check OK!
[2025-01-16T02:02:50.807] [1261] [DEBUG] - Comment initial status is approved
[2025-01-16T02:02:51.183] [1261] [DEBUG] - Comment akismet check result: approved
[2025-01-16T02:02:51.184] [1261] [DEBUG] - Comment keyword check result: approved
[2025-01-16T02:02:51.184] [1261] [DEBUG] - Comment post hooks preSave done!
[2025-01-16T02:02:51.646] [1261] [DEBUG] - Comment have been added to storage.
Wecom Group Notification Success: {"errcode":0,"errmsg":"ok"}
Notification mail send success: undefined
[2025-01-16T02:02:52.525] [1261] [DEBUG] - Comment notify done!
[2025-01-16T02:02:52.525] [1261] [DEBUG] - Comment post hooks postSave done!

PC端评论截图：

手机端消息截图：

@Mister-Hope @lizheming 如果有时间请帮忙review下代码，看是否满足合并要求

[lizheming]

这个企业微信 QQ 群通知的能力，能否做成插件的形式呢，后期相关的通知能力也会转成插件的形式支持

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Can this enterprise WeChat QQ group notification capability be made into a plug-in form? Later related notification capabilities will also be converted into a plug-in form to support

[mapxn]

这个企业微信 QQ 群通知的能力，能否做成插件的形式呢，后期相关的通知能力也会转成插件的形式支持

Can this enterprise WeChat QQ group notification capability be made into a plug-in form? Later related notification capabilities will also be converted into a plug-in form to support

👍 这是个好主意，一些附加功能通过插件形式提供，核心功能尽量紧凑精简。但可能要花时间研究下插件了

[lizheming]

https://waline.js.org/reference/server/plugin.html#%E5%AE%89%E8%A3%85%E6%8F%92%E4%BB%B6
https://waline.js.org/reference/server/config.html#postsave-comment-pcomment

可以看看文档，挺简单的

[mapxn]

https://waline.js.org/reference/server/plugin.html#%E5%AE%89%E8%A3%85%E6%8F%92%E4%BB%B6 https://waline.js.org/reference/server/config.html#postsave-comment-pcomment

可以看看文档，挺简单的

确实挺简单的，一个中午就写完代码且测试好了（企微群机器人评论插件），稍后提交一个PR到plugins仓库。

[mapxn]

后期相关的通知能力也会转成插件的形式支持

@lizheming 对于后期通知方式的支持，是希望做成每种通知方式都独立的一个插件，还是统一集成在一个统一的Notification插件内？

---

Later related notification capabilities will also be converted into plug-in support

@lizheming Regarding the support for later notification methods, do you want to make each notification method an independent plug-in, or do you want it to be integrated into a unified Notification plug-in?