Add an indicator for camera and location usage. When an application is accessing the camera/webcam or location it will show an indicator.

For the camera , I believe it's pipewire related, if not then monitoring /dev/video* might be a solution if there was no other API.

From #2612:

This can be extended in the future to show Geoclue status (location usage), XWayland screen share status, and camera status :)

Tasks:

• Add camera indicator.
• Add location indicator.