Add Photoreal Factory custom node

[Miragea-Ss]

Adds Photoreal Factory as a custom node for ComfyUI.
No model weights included; users are expected to place models in the standard ComfyUI models directory.

[ltdrdata]

1. output_folder, folder_path, and filename are vulnerable to path traversal attacks. They need proper sanitization.
2. The current directory structure cannot be installed via ComfyUI-Manager. The repository should be structured so that __init__.py is located at the root of the repo.

https://github.com/Miragea-Ss/photoreal_factory/blob/17db4fc6139ba5c433453af46541b12dda86ec80/photoreal_factory/nodes.py#L86

https://github.com/Miragea-Ss/photoreal_factory/blob/17db4fc6139ba5c433453af46541b12dda86ec80/photoreal_factory/nodes.py#L62