Add player functionality with HLS support and API integration

- Implemented a new Player class in player.js to handle audio playback, including HLS support using hls.js.
- Created a shared API module in api.js for making HTTP requests with proper error handling.
- Added DOM utility functions in dom.js for creating and clearing elements.
- Introduced WebSocket connection handling in ws.js for real-time updates.
- Developed a comprehensive CSS stylesheet for styling the application, including a high-contrast theme.

vite.config.js

@@ -0,0 +1,24 @@
+import { defineConfig } from 'vite';
+import { resolve } from 'node:path';
+
+export default defineConfig({
+  root: 'web',
+  publicDir: false,
+  server: {
+    port: 5173,
+    proxy: {
+      '/api': 'http://localhost:4173',
+      '/ws': { target: 'ws://localhost:4173', ws: true }
+    }
+  },
+  build: {
+    outDir: '../server/public',
+    emptyOutDir: true,
+    rollupOptions: {
+      input: {
+        kiosk: resolve(__dirname, 'web/index.html'),
+        admin: resolve(__dirname, 'web/admin/index.html')
+      }
+    }
+  }
+});