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

.prettierrc

@@ -0,0 +1,12 @@
+{
+  "arrowParens": "avoid",
+  "bracketSameLine": true,
+  "bracketSpacing": false,
+  "printWidth": 180,
+  "semi": true,
+  "singleAttributePerLine": false,
+  "singleQuote": true,
+  "tabWidth": 2,
+  "trailingComma": "none",
+  "useTabs": false
+}