Extend main

[CM134]

• integrate a human player into the game in some way.
  • consider multithreading
  • consider to make the solver stop then update the frame and the resume the solver
• player should be able to make a bid of the moves he found. Then a timer of 1 minute starts.
• after AI found a path, player should have the opportunity to search for 1 minute to find a shorter path. (Maybe AI like Greedy should also continue searching). Player should be able to stop the 1 minute any time and say 'he gives up', so we do not always have to wait a minute when playing.