FireSessions - making the CI3 Session lib available as a standalone component

Hello, guys!

This is my first attempt to make one of the greatest CI3 libs available as a standalone, separate & installable component: the Session library, available under the name of FireSessions.

If you are working on a custom-made PHP project, you can get the now the power of this lib right into it!

The only thing missing here is the database driver, at this moment. Hopefully, it will be available as well soon.

Cheers!