feat: support for usb cameras and onvif zoom functionality in camera mgmt app

[ajcasagrande]

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PR Checklist

Please check if your PR fulfills the following requirements:

• [ ] I have added unit tests for the new feature or bug fix (if not, why?)
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Testing Instructions

NOTE: Not fixing DCO/squashing/force-pushing until reviews are completed. This helps the people who have already reviewed it to better track what has changed.

[ajcasagrande]

Squashed and fixed DCO

[presatish]

Most of it looks good. I have added a comment for the docs.