feat: implement comprehensive i18n internationalization support

- Add custom i18n infrastructure with TypeScript support
- Support Chinese (zh-CN) and English (en-US) languages
- Implement language switching with localStorage persistence
- Update all components with translation keys:
  * System info components (board-info-panel, board-index)
  * Display management components (display-state-index, display-state-card)
  * LED strip configuration components (led-strip-configuration, led-count-control-panel)
  * White balance component with detailed usage instructions
  * LED test component with test pattern descriptions
- Add comprehensive translation coverage for:
  * Navigation menus and page titles
  * Common UI elements (buttons, status, actions)
  * Hardware information and connection status
  * Display configuration options
  * LED strip settings and controls
  * White balance adjustment instructions and tips
  * LED test modes and descriptions
  * Error messages and status indicators
- Features:
  * Dynamic language switching without app restart
  * Type-safe translation keys with full TypeScript support
  * Modular design for easy language extension
  * Responsive UI updates using SolidJS reactivity

package.json

@@ -11,6 +11,7 @@
   },
   "license": "MIT",
   "dependencies": {
+    "@solid-primitives/i18n": "^2.2.1",
     "@solidjs/router": "^0.8.4",
     "@tauri-apps/api": "^2.6.0",
     "debug": "^4.4.1",