如何在拍照时打开手电筒/闪光灯？

## Current use version？
#### 当前使用的版本是多少？
v3.0.9
```
v3.0.9
```

## Will this problem occur in demo?
#### Demo能否复现这问题？

```
是
```

## Describe the problem or provide an error log？
#### 描述问题或提供错误log？

```
请问下，拍照的时候打开手电筒/闪光灯怎么设置。现在我这的需求是，在拍照时环境光线暗的情况下自动打开灯光。环境光线检测我这边可以设置，但是在拍照界面打开手电筒或者闪光灯该怎么设置？
```

Reproduce the question in the demo using PictureSelector v3.0.9, focusing on the photo-capture flow and its available camera settings. Determine whether flashlight or torch control is exposed during capture; done when the supported configuration or its absence is clearly documented.

Written by the indexing model from the issue text.