WIP: refactor(service): Refactor OpenRC service manager

[gcsong023]

trafficstars

• 更新 IsEnabled 和 IsActive 检查逻辑，使用更可靠的命令
• 修复 ServiceExists 检查，直接使用文件路径判断
• 优化 FindServices 函数，扫描 /etc/init.d 目录
• 调整 BuildCommand 函数，支持 OpenRC 特定操作
• 修改 ParseStatus 函数，使用更新后的正则表达式

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[wanghe-fit2cloud]

感谢支持 👍