add win venv script

scripts/install-comfyui-venv-win.bat

@@ -0,0 +1,20 @@
+git clone https://github.com/comfyanonymous/ComfyUI
+cd ComfyUI/custom_nodes
+git clone https://github.com/ltdrdata/ComfyUI-Manager
+cd ..
+python -m venv venv
+call venv/Scripts/activate
+python -m pip install -r requirements.txt
+python -m pip install -r custom_nodes/ComfyUI-Manager/requirements.txt
+python -m pip install torch torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/cu118 xformers
+cd ..
+echo "cd ComfyUI" >> run_gpu.sh
+echo "call venv/Scripts/activate" >> run_gpu.sh
+echo "python main.py" >> run_gpu.sh
+chmod +x run_gpu.sh
+
+echo "#!/bin/bash" > run_cpu.sh
+echo "cd ComfyUI" >> run_cpu.sh
+echo "call venv/Scripts/activate" >> run_cpu.sh
+echo "python main.py --cpu" >> run_cpu.sh
+chmod +x run_cpu.sh