Added basic audio handling elements
Changes in codeblocks/srs and codeblocks/include

-AudioHandler.cpp
-AudioHandler.h
Fixed AudioHandler bugs. Replaced pointers with smart pointers. Added bool parameter for loop function. Added test application.
Changed Event to be a pointer which fixes a sticky event issue with keyreleased.

Added volume inc, dec
Added audioh destructor
Changed the test driver to be more cooler
Music doesnt stutter when you keep trying to play it anymore
Added Map and Scene. Demo is a demonstration of early concepts. Need to fix 1 memory leak by adjusting RenderHandler. Will also need to replace vector in map with two unordered_map. PLEASE NOTE: Map is in a strict concept stage. Attempting to use map outside of demo will result in error as it is not fully implemented yet.