Add EmailReader Library

[danielindiano]

Create a library to

• connect and read emails with imap credentials
  • Ref: https://garrettstjohn.com/article/extracting-attachments-from-emails-with-php/
• get emails by filter (recipient or title and date)
  • Ref: http://php.net/manual/pt_BR/function.imap-search.php
• function to get the attachments from email and return content
  • Ref: https://garrettstjohn.com/article/extracting-attachments-from-emails-with-php/

[danielindiano]

This library will be used to retrieve data from Adtech Provider (and maybe others) and Adserving Correlation Table;