Support hot-plugging of camera

[warlice]

在pc上，摄像头不一定是系统启动时就存在，也有可能是启动后，临时关闭的。所以想实现支持摄像头的动态可插拔能力。
On a PC, the camera may not be present at system boot and could be temporarily disabled after startup. Therefore, we want to achieve support for dynamic camera hot-plugging.

[609386314]

底层HAL监控设备的插拔，框架层支持动态更新硬件配置信息，动态插拔可能导致设备文件权限变化，也要有相关的处理，具体逻辑可以了解下面的几个仓库：
The underlying HAL monitors device hot-plugging, the framework layer supports dynamically updating hardware configuration information. Dynamic hot-plugging may cause changes in device file permissions, which also requires relevant handling. You can refer to the following repositories for the specific logic.
https://github.com/[openfde/lineageos_android_frameworks_av](https://github.com/openfde/lineageos_android_frameworks_av
https://github.com/[openfde/lineageos_android_hardware_interfaces](https://github.com/openfde/lineageos_android_hardware_interfaces
https://github.com/[openfde/waydroid_waydroid](https://github.com/openfde/waydroid_waydroid