mostly work on new_game script

created .gitignore file

-> added a deliverables folder for project deliverables
-> changed some function names in the BoardGUI.h to make them more standardized,
-> also added a GAME_MODE enum to BoardGUI_hof.h, since some of its functions
depend on it
-> main work was on BoardGUI.cpp, new_game now works, also refactored some
move_cursor code to remove some duplication.
-> main.cpp changed to reflect changes in other code.