Added Loop Class for game loop

This class is a start towards making a game loop. We will see if anything will come from this
Changed namespace usage

Adjusted namespace usage for "ag" and some extra info in comments for the Loop Class.

This will probably be implemented throughout existing code.
Added namespace changes to Planet and changes to comments in Loop

Namespaced changes in Planet Class and some small comments changes in Loop Class.
MOAR COMMENTS

Changed some more comments.
Added main.cpp also changed more comments in Loop

Changed Comments to reflect names in Loop Class

Added Main class