Social Logins & QR Logic

I’m running a PHP application purchased from CodeCanyon and need two focused improvements. 1. Social sign-in Right now the script only supports its native username/password flow. I want to integrate OAuth so users can log in with Google, Facebook, Instagram and Outlook... (Budget: $10 - $30 USD, Jobs: API Development, C# Programming, Database Management, MVC, MySQL, OAuth, PHP, Software Architecture)