To power cycle from the front of your cabinet or control box as I think maybe you are looking to do you could install a micro switch in a convenient place and connect it to the GPIO pins as people have done to make Ras Pi reset switches for Pi Camera’s. If you wanted something more than that then The Pi Supply Switch from the Pi store shuts down all the USB supply.
I made a Camera reset for a Pi timelapse camera I made. It was similar to this:
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