Seperated engine from game, more reorganization

Seperated the engine from the game src code.  The engine builds to a .lib file and links to the game.  More changes made to the project settings - the builds now create a Temp folder with their platform, and configuration directory.  This temp folder contains the object files and other debug files.  Added this folder to the git ignore list.  Lib folder is now created after the engine is built - the .lib files are placed here.  3rd party libraries, after compiled, need to be placed in this directory.  New 3rdParty directory added to SEI(engine) directory.  This directory has been added to the git ignore list to save space.  3rd party libraries should be placed here.  Their includes should be added to the include list as appropriate.  Docs directory added where engine/game documentation should be stored.