Add Users Controller

[rotexdegba]

Add a lean and fully functional Users controller that will perform BREAD (Browse, Read, Edit, Add and Delete) operations on Users for each application created using this framework. This implementation should not require any composer package. Just plain old PDO and sqlite.

Make this controller also support login with Google, Facebook & other popular identity providers.

https://www.codexworld.com/login-with-google-api-using-php/