Autostart the game

Added a shebang and function call to start the game on run
Prompt to play on hard-mode (expert mode)
Add expert-move-strategy function

Currently just uses the random move strat
Give opponent sums more generic names

This makes sense since we will be allowing 2 player mode
Correct formatting
Remove licence, since it's mostly Chins code
Allow multilayer mode
Condense print-board function
Remove the shebang from game.cl

This ensures we can still load it into the lisp REPL
Clean up Chan's code, add some good documentation
Setup the skeleton for the expert move strategies