Implement Rectangle

[Sakorni]

Implement class for handling Circles/Sectors (center, radius, starting angle, ending angle), including

• [ ] Write tests
• [ ] Validation
• [ ] Boolean operations (Intersection, Union, Subtraction) for Rect-Rect pairs
• [ ] Destructive and non-destructive transforms (Move, Mirror, Rotate)

[Kekuz]

I will do it