Added dev run script

dev.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# Kill background processes on script exit
+trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM EXIT
+
+# Start Frontend Dev Server
+echo "🚀 Starting Frontend Dev Server..."
+cd frontend
+npm install
+npm run dev &
+
+# Start Backend Dev Server
+echo "🚀 Starting Backend Dev Server..."
+cd ../backend
+npm install
+npm run dev &
+
+# Wait for both processes
+wait
+
+echo "🛑 Development servers stopped"