[FEAT] <title>Add webhook-url Robot Alert Support

[loa123]

Is this a new feature request?

• I have searched the existing issues

Wanted change

Problem Description

Current smokeping-docker only supports Email/Slack alerts. Requesting to add alert integration for telegram Robot and DingTalk etc.

Reason for change

Problem Description

Current smokeping-docker only supports Email/Slack alerts. Requesting to add alert integration for WeCom Robot and DingTalk Robot, which are critical communication tools widely used in Chinese enterprise environments.

Feature Request Details

1. WeCom Robot Integration
   Implement alert notifications via WeCom Webhooks

2. DingTalk Robot Integration
   Implement alert notifications via DingTalk Webhooks

3. Environment Configuration
   Add configurable environment variables:

   ALERT_WECOM_URL=https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=xxx
   ALERT_DINGTALK_URL=https://oapi.dingtalk.com/robot/send?access_token=xxx

​​4. **Message Format​​
Support Markdown-formatted messages with key information:
Alert status (CRITICAL/WARNING)
Target hostname
Latency metrics
Timestamp
(Optional) Direct link to Smokeping dashboard
​​Security​​
Maintain existing security practices when handling webhook URLs

Proposed code change

No response

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[j0nnymoe]

You would need to request this at the upstream project