Describe the feature

The webcam face search feature currently uses the default camera without providing users the ability to select from multiple available cameras, which could leave the user in a sticky situation where they might want to change the camera or stuck on an unusable camera like in the case below.

Proposed Behavior

• Display a dropdown menu above the "Capture Photo" button for switching between cameras.
• List all available video input devices with their labels.
• Allow users to dynamically switch between cameras.
• The webcam preview should update immediately when a different camera is selected.
• The dropdown should display "No other cameras detected" in case only one camera is available.

Benefits

• Improves user experience for users with multiple cameras
• Allows selection of higher quality external cameras over built-in webcams
• Essential for desktop users with multiple video input devices
• Enables use of specialized cameras (e.g., high-resolution, wide-angle)

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Checklist before Submitting.

• Have you updated docs for it?.
• Have you added unit tests?.
• Have you made sure unit tests pass?
• Have you made sure code formatting is correct?
• Does it contain any style related issues?