Add Windows Task Scheduler setup script for automatic startup

setup_startup.bat

@@ -0,0 +1,20 @@
+@echo off
+echo Setting up LEGO Instructions Manager to run at startup...
+
+REM Create a scheduled task to run at logon
+schtasks /create /tn "LEGO Instructions Manager" /tr "E:\LIM\start_lim.bat" /sc onlogon /rl highest /f
+
+if errorlevel 1 (
+    echo Failed to create scheduled task. Make sure you run this as Administrator.
+    pause
+    exit /b 1
+) else (
+    echo Successfully created startup task!
+    echo.
+    echo The LEGO Instructions Manager will now start automatically when you log in.
+    echo.
+    echo To remove this startup task later, run:
+    echo schtasks /delete /tn "LEGO Instructions Manager" /f
+    echo.
+    pause
+)