Add start.bat and gitignore

tools/win/qemu/.gitignore

@@ -0,0 +1,5 @@
+*
+!.gitignore
+!README.md
+!automate.bat
+!start.bat

tools/win/qemu/start.bat

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+@echo off
+REM ========================================================
+REM  INSTALL Windows ARM64 VM (QEMU on Windows x64)
+REM ========================================================
+
+C:\msys64\mingw64\bin\qemu-system-aarch64 ^
+ -M virt -m 8G -cpu max,pauth-impdef=on -smp 8 ^
+ -bios ./QEMU_EFI.fd ^
+ -accel tcg,thread=multi ^
+ -device ramfb ^
+ -device qemu-xhci -device usb-kbd -device usb-tablet ^
+ -nic user,model=virtio-net-pci ^
+ -device usb-storage,drive=install ^
+ -drive if=none,id=install,format=raw,media=cdrom,file=./Win11_24H2_English_Arm64.iso ^
+ -device usb-storage,drive=virtio-drivers ^
+ -drive if=none,id=virtio-drivers,format=raw,media=cdrom,file=./virtio-win-0.1.271.iso ^
+ -drive if=virtio,id=system,format=raw,file=./win11-arm64.img