weighted QS average per campaign experiment

This is a tracker for the LAST_7_DAYS average weighted quality score. You can also set it to LAST_30_DAYS or LAST_BUSINESSWEEK. The setup is quite easy, just add your base campaign name in the script and the script will find your experiment and prints the data per day. It's important you have a proper naming convention in place for your (experiment) campaigns. Which starts with the base name.