feat: Add live reload functionality with Grunt watch and Socket.IO (#13489)

- Added livereload event to Grunt watch tasks for instant browser refresh
- Integrated Socket.IO WebSocket communication for real-time updates
- Enhanced development workflow with immediate file change detection
- Improved developer experience with automatic browser reload on file changes

Changes:
- Gruntfile.js: Send livereload message when files change
- src/start.js: Handle livereload events and broadcast via Socket.IO

Gruntfile.js

@@ -174,6 +174,8 @@ module.exports = function (grunt) {
 			}
 			if (worker) {
 				worker.send({ compiling: compiling });
+				// Send livereload event via Socket.IO for instant browser refresh
+				worker.send({ livereload: true });
 			}
 		});
 	});

src/start.js

@@ -115,6 +115,13 @@ function addProcessHandlers() {
 				const translator = require('./translator');
 				translator.flush();
 			}
+		} else if (msg && msg.livereload) {
+			// Send livereload event to all connected clients via Socket.IO
+			const websockets = require('./socket.io');
+			if (websockets.server) {
+				websockets.server.emit('event:livereload');
+				winston.info('[livereload] Sent reload event to all clients');
+			}
 		}
 	});
 }