feat: 使用pm2管理心跳进程

[happyCoding1024]

使用 pm2 管理心跳进程，优化静默更新机制

[tencent-adm]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

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[lininghuhu]

这是来自QQ邮箱自动回复邮件。你好，我已收到你的邮件。

[xqxian]

LGTM