During an Element Call call, no fast and easy way to change microphone, audio output and video input

### Your use case

#### What would you like to do?
Easily directly next to the microphone and video buttons change input+output and video input

#### Why would you like to do it?
Jitsi solved that really nice, zoom as well where you have a small carrot symbol ^ next to the buttons to change microphone, audio out and video easily.

#### How would you like to achieve it?

### Have you considered any alternatives?

_No response_

### Additional context

_No response_

The issue names the microphone and video controls but no files or tests. Start by locating the call controls and any existing device-selection entry points, then determine how microphone, audio output, and camera choices are exposed. Done means users can change each device directly beside the relevant buttons during a call.

Written by the indexing model from the issue text.