Add JezzBall game for GitHub Universe 2025 badge

- Classic JezzBall gameplay with bouncing balls and divider drawing
- Level progression with increasing difficulty (more balls per level)
- Lives system (3 lives, lose 1 when ball hits growing divider)
- Win condition: capture 75% of play area
- Efficient region tracking using inverted approach (tracks unclaimed ball regions)
- Independent divider side growth with collision detection
- Smooth cursor controls: A/C for horizontal, UP/DOWN for vertical, B to toggle direction
- Visual feedback with color-coded claimed vs unclaimed areas
- Score tracking and HUD display
- Optimized for badge performance with simple rectangle-based calculations

Author: cardonator