Almost done core game + ui!

I spend the last 4 hours working on the UI! So now when you start the game, you will see a simple title screen where you can start a new game from one of the levels (not shown in video) or load a saved game. Then you can go into the core gameplay loop: edit -> simulate -> stats screen (now shows pass/fail based on level conditions!).

It was mostly tedious to write every single ui class, but at least I finished most of the UI. The remaining things that I need to do is add more road placement constraints (no overlapping), add more types of roads, and POLISH! I’ll be working on those for the next two weeks until the end of Stardance I guess.