chore: initialize typing-chud project with Unified API structure

- Copy vim-snake structure stripped of game-specific logic
- Remove finalScore calculation (raw data only)
- Setup example app with keybinding state management
- Empty board renders and waits for game logic

.npmignore

@@ -0,0 +1,12 @@
+src/
+example/
+node_modules/
+tsconfig.json
+global.d.ts
+bun.lockb
+*.log
+.git
+.gitignore
+.vscode/
+.idea/
+