This commit introduces a character video panel on the left side of the game scene with the following features:
- Added loading of multiple video assets (god-idle, god-sin-enters, sin-idle) in BootScene
- Implemented a video panel with gradient background and border at the left side of the screen
- Added character state management with automatic transitions based on game funds
- Created _checkCharacterState() method that triggers video transitions when sin total exceeds lord funds by 200
- Implemented smooth video transitions from god-idle to sin-entering to sin-idle states
- Maintained existing game functionality while adding dynamic character animations
