feat(phase3): create gameInfo.ts with complete game documentation

- Create comprehensive gameInfo structure following vim-maze pattern
- Document controls: hjkl navigation, space/q/p game controls
- Document rules: movement, collisions, game flow, elements
- Document scoring: level-based points, speed progression
- Document configuration: all GameOptions with defaults and examples
- Add tips and objective for players
- Export gameInfo from main index.ts

src/index.ts

@@ -4,4 +4,5 @@ export * from './useGameStatus';
 export * from './useBoard';
 export * from './useScore';
 export * from './types';
+export * from './gameInfo';