Create UK-script.py

This script download eu agreement information for english companies (ENG, SCOT, NI, WAL) based on info available on OpenFoodFacts data (for the moment, a CloudFlare protection blocks the connection on English Ministry of Agriculture over HTTP via Python) and merge it in a single file. See beginning of file for dependencies.

Important: you need the two additional files "UK-methods.txt" and "UK-urls.txt" that contains the list of file to be included and the method to clean the data