FaceFusion support

Nobody has claimed this yet.

### Checklist

- [ ] The issue exists after disabling all extensions
- [x] The issue exists on a clean installation of webui
- [x] The issue is caused by an extension, but I believe it is caused by a bug in the webui
- [x] The issue exists in the current version of the webui
- [x] The issue has not been reported before recently
- [ ] The issue has been reported before but has not been fixed yet

### What happened?

facefusion not correctly installing

ffmpeg and also realesrgan downlaoded still showing the not installed

### Steps to reproduce the problem

facefusion not correctly installing

ffmpeg and also realesrgan downlaoded still showing the not installed

### What should have happened?

facefusion uploading views on forge ui

### What browsers do you use to access the UI ?

_No response_

### Sysinfo

[sysinfo-2024-02-08-10-48.json](https://github.com/lllyasviel/stable-diffusion-webui-forge/files/14208008/sysinfo-2024-02-08-10-48.json)

### Console logs

```Shell
Using pytorch cross attention
ControlNet preprocessor location: D:\Personal\webui_forge_cu121_torch21\webui\models\ControlNetPreprocessor
*** Error loading script: facefusion_ui.py
Traceback (most recent call last):
File "D:\Personal\webui_forge_cu121_torch21\webui\modules\scripts.py", line 541, in load_scripts
script_module = script_loading.load_module(scriptfile.path)
File "D:\Personal\webui_forge_cu121_torch21\webui\modules\script_loading.py", line 10, in load_module
module_spec.loader.exec_module(module)
File "", line 883, in exec_module
File "", line 241, in _call_with_frames_removed
File "D:\Personal\webui_forge_cu121_torch21\webui\extensions\sd-webui-facefusion\scripts\facefusion_ui.py", line 7, in
from facefusion.processors.frame.modules import face_enhancer, face_swapper, frame_enhancer
File "D:\Personal\webui_forge_cu121_torch21\webui\extensions\sd-webui-facefusion\facefusion\processors\frame\modules\frame_enhancer.py", line 6, in
from realesrgan import RealESRGANer
ModuleNotFoundError: No module named 'realesrgan'
```

### Additional information

_No response_

Start with extensions/sd-webui-facefusion/scripts/facefusion_ui.py and facefusion/processors/frame/modules/frame_enhancer.py, then reproduce the clean-install failure shown in the console log. Check the ffmpeg and realesrgan installation status and the FaceFusion upload view; done means the extension loads without the ModuleNotFoundError and the expected view is available.

Written by the indexing model from the issue text.