Flask API endpoint

Captures the video on the route "/recognize"

• Accepts a base64 string of the video and decodes it back to a file
• Saves the file to "res.mp4" to compute the recognition algorithm
• Iterates over frames and gets every face in that frame
• For each face detected, iterate over "/imfaces" to find a pre-existing match
• If a match is found, update the location of the face id in the database
• If no match, save this file to the "/imfaces" and insert a row in db

Returns the location history of a suspect at "/location"

• Expects a base64 string of the face's image and converts it to file
• Saves the file to "res.jpg" in local directory
• Iterates over every file in "/imfaces" and finds for a match
• If a match is found, return the location history of that face id

Do not make any changes in /imfaces, it represents every image in the database.