Create a confirm COTS feature in the desktop app

[gcoleman72]

Add two buttons to the COTS photos page.
"NO" under the "previous" button
"YES" under the "next" button

This should populate a new field of CotsDetection. The field should be called "confirmed" and it should be boolean.
Ensure the serialization and de-serialization includes the new field.

For realtime detections write this data back to the original source files (cots_sequence*.json)
For eod detections create a file named cots_sequence*.json (similarly named to the realtime files). These files should have only two fields "sequence_id" and "confirmed".

Ensure this information is loaded from these files as well.