+ mapmaker Music. + Shift+Click in mapmaker will place objects underneath others.

+ load_music();
+ add_tile_behind();
+ add_item_behind();
+ mapmaker functionality where you can shift+click to place objects underneath others
+ m_Learn_by_Doing music in game. It is the "Learn by Doing.mp3" file in resources\sounds.
~ changed a few things about the player structure. I have added the variable for what direction the user is moving.
Signed-off-by: jensenr30 <jensenr30@gmail.com>