feat: add ComfyUI integration with Ansible playbook

- Add ComfyUI installation to Ansible playbook with 'comfyui' tag
- Create ComfyUI requirements.txt and start.sh script
- Clone ComfyUI from official GitHub repository
- Symlink HuggingFace cache for Flux model access
- ComfyUI runs on port 8188 with CORS enabled
- Add ComfyUI to services list in playbook

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

models/comfyui/requirements.txt

@@ -0,0 +1,12 @@
+torch
+torchvision
+torchaudio
+transformers
+diffusers
+accelerate
+safetensors
+omegaconf
+einops
+kornia
+spandrel
+soundfile