init lab 4 project by reusing some code from lab 3
add error class
add mouse abstraction
remove frame window class
add high-precision timer class
abstract the app into game class, refactor code into a more game-like architecture
remove reference to frame_window.h
Implement basic geometry math, create a circle bouncing of the walls
Create bouncing circles
Comment out console output
Add readme and screenshots
Merge branch 'lab4dev'