Create WebSocket Server

- Created a WebSocket server with connection handling and message broadcasting
- Added frontend files including HTML, TypeScript, and CSS for a WebSocket test client
- Configured package.json for both server and frontend with necessary scripts and dependencies
- Introduced Prettier configuration for code formatting
- Established a basic structure for handling WebSocket connections and messages

frontend/web/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "web",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview"
+  },
+  "devDependencies": {
+    "typescript": "~5.8.3",
+    "vite": "^7.1.2"
+  }
+}