[Feature]: 能否添加一个闲置时自动关闭灯光的选项

### Pre-flight checklist

- [x] I searched existing issues and the [Roadmap](https://github.com/AprilNEA/OpenLogi#roadmap), and this isn't already tracked.

### Problem / motivation

我的鼠标是G102, 是否可以出个类似于官方驱动的这个设置，当前看着是减小亮度，但我更想他闲置时灯光是关闭的。

### Proposed solution

添加一个设置，在长时间不使用鼠标后（1-5分钟），灯光自动关闭。

### Alternatives considered

G Hub有这个设置。

### Related area(s)

- [ ] GUI
- [ ] CLI
- [ ] Button actions / remapping
- [ ] DPI
- [ ] SmartShift
- [ ] Per-application profiles
- [ ] Configuration (TOML)
- [ ] Auto-update
- [x] Other

### Additional context

_No response_

Start by locating the existing mouse lighting controls and the input or idle-detection entry points, then check how settings are exposed for G102 devices. The feature is done when a user can configure an inactivity period of 1–5 minutes and the mouse lighting turns off after that period without input.

Written by the indexing model from the issue text.