refactor: improve D-Bus resource management with RAII

[18202781743]

1. Added custom deleters for D-Bus resources (DBusError, DBusConnection,
   DBusMessage)
2. Replaced manual resource cleanup with std::unique_ptr RAII wrappers
3. Simplified error handling by removing repetitive cleanup code
4. Improved memory safety by ensuring resources are always released
5. Added detailed documentation for getId() function explaining the
   libdbus-1 usage

The changes ensure proper resource management even in error cases and
make the code more maintainable by eliminating manual cleanup. This is
particularly important for D-Bus operations that may fail at multiple
points. The RAII approach prevents resource leaks and makes the code
more robust.

refactor: 使用 RAII 改进 D-Bus 资源管理

1. 为 D-Bus 资源(DBusError, DBusConnection, DBusMessage)添加自定义删除器
2. 使用 std::unique_ptr RAII 包装器替代手动资源清理
3. 通过移除重复的清理代码简化错误处理
4. 通过确保资源总是被释放来提高内存安全性
5. 为 getId() 函数添加详细文档说明 libdbus-1 的使用

这些变更确保了即使在错误情况下也能正确处理资源，并通过消除手动清理使代码
更易于维护。这对于可能在多个点失败的 D-Bus 操作尤为重要。RAII 方法防止了
资源泄漏并使代码更加健壮。

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This pull-request has been approved by: 18202781743, zccrs

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关键摘要:

• 使用 std::unique_ptr 管理资源，避免了手动释放内存的麻烦，提高了代码的安全性。
• 在 dbus_connection_send_with_reply_and_block 调用后立即重置 msgGuard，确保消息在发送后立即释放。
• 在 dbus_message_get_args 调用失败时，立即返回，避免了不必要的资源释放。
• 添加了注释，解释了代码更新的原因和目的，提高了代码的可读性和可维护性。

是否建议立即修改:

• 否，提交的代码已经是一个改进的版本，没有发现需要立即修改的关键问题。