Refactoring rn

Set up project directory

Restarted project using Qt framework

Shifted project to use Qt for handling GUI

Attributes window is now working.

Bugfix app states

Added support for different app states.

Create ui_elements.py, implement Button class

Updated requirements.txt, deleted extraneous files

Bugfix main.py: Missing colon, 'ley'->'key' typo, incorrect indentation for drag state reset logic

Add: delete Ball, create/update/delete BallPath functionality

Bugfix main.py draw_grid logic

Added grid drawing logic, ball placement logic

Bugfix main.py: improper instantiation of Scene.balls, improper order of display width, height args

Create main.py, add in backbone functionality